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™
1 Introduction
There is increasing need for effective air sampling in all areas where airborne micro-organisms may
contaminate or otherwise affect industrial products and processes. Monitoring is especially important in:
• the pharmaceutical industry
• the food industry
• hospitals
• the cosmetics industry
• the environment
Today a number of monitoring methods are available, most of which are based on the impaction
principle. During development of the MAS-100
eliminated, and their best aspects retained, leading to the creation of a user-friendly, dependable and
precise air sampler for standard Petri dishes.
The MAS-100
™
aspirates 100 liters of air per minute, allowing up to 2000 liters to be sampled per cycle.
This performance enables sampling to be carried out according to the strict conditions of monitoring in
sterile and „clean” areas (see point 1 in chapter
The impaction velocity (speed at which airborne micro-organisms hit the surface of the agar) is
approximately 11 meters per second, corresponding to stage 5 of the Andersen Sampler (see point 3 in
chapter
19). This velocity guarantees that all particles > 1 µm are collected. Comparisons with other
methods of air sampling ( see point 2 in chapter
numbers of micro-organisms collected.
Note:
The MAS-100
ISO 14698-1:2003(E)
™
, all the shortcomings of existing sampling systems were
19).
19) have not revealed any significant differences in the
corresponds to International Standard
1
2 Basic principle
The MAS-100
sampler (see point 3 in chapter
is directed onto a standard agar poured plate. After the collection cycle, the Petri dish is incubated and
the colonies are counted. The MAS-100
aspirated volume is continuously monitored. The system measures the inflow of air and regulates the
aspirated volume to a constant value of 100 liters per minute. The MAS-100
this volume if there are external factors preventing a steady flow of air, or if overfilled Petri dishes are
blocking or impeding flow. For measurement in pharmaceutical industry the recommended sampling
volume – according to international guidelines – should be 1000 liters.
1
ISO 14698-1:2003(E) Cleanrooms and associated controlled environments - Biocontamination control
Part1: general principles and methodes; chapter 3.1.13; 5.3;
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™
is a high-performance instrument that is based on the principle of the Andersen air
19), which aspirates air through a perforated plate. The resultant airflow
™
operates with a high-performance suction device, and the
™
automatically regulates
3 Most important advantages of the MAS-100™
• new: individual activation of calibration reminder
• new: Adapter-Kit for RODAC-Plates
• new: Validated Firmware MAS-100 V5.0X by Novatek for „Environmental Monitoring” software
• new: SQS-Cycle (see point 5 in chapter
volume may be split up to 20 sequences over a period of total 24 hours
• Uses standard 90-100mm Petri dishes
• Data communication for error-free results and automatic record-keeping
• Manual and/or template mode
• Build in anemometer for automatic volume compensation: Differences in Petri dish fills cannot affect
airflow
• Indication of low airflow
• Real time clock and calendar
• Compact and easy to use
• Easy to calibrate
• Adjustable for different Petri dish sizes
• 100/240V, 50-60kHz power unit, or battery operation
• According to international Guidelines: Isokinetic measurement, 0.45 m/sec, 100 liters / minute
• Sampling volume adjustable from 1 – 2000 liters
3.1 First time use of MAS-100
If the MAS-100
4.2 and 20.6)
(see
™
is used for the first time or after a calibration the “calibration reminder" has to be set.
™
3.2 New: SQS- Sequential air sampling5
A newly developed control system ( Software V 5.0x) allows a measurement with the MAS-100
prolonged time with a single agar plate. Hereby, without any microbial loss, up to 20 air samples can be
accumulated on the same Petri dish over a period of several hours. The main advantage of this method
is that the risk of secondary contamination by the operators during the exchange of plates is reduced to
a minimum. This is of very great importance for ambient air monitoring in sterile zones. In addition, by
collecting sequential samples over a prolonged period of time the randomization is improved and thus a
more reliable result obtained. Moreover, instead of several 90mm standard Petri dishes, only one dish
has to be evaluated, thus reducing the expenditure on equipment and labour.
19) may be selected. If this cycle is activated, the desired
™
over a
5
SQS-Sequential air sampling; Validation of the microbial count in the air using the MAS-100; Swiss
Pharama 26 (2004) No.11,9-11
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4 General functions
4.1 Overview
The MAS-100
„Modify?” by pressing the „yes” or „no” button. The program works its way automatically through all the
required parameters. Once you have set the aspirated volume and delay, the program goes to the
„Start ?” prompt. When you press „yes”, the MAS-100
green light indicates that the instrument is operating. The sampled volume and time remaining are
continuously displayed. Once the pre-set volume has been sampled, the red „stop” LED lights.
4.2 First time use of MAS-100™ = Activation of calibration reminder
MAS100 V5.XX
S/N: XXXXX
Set calibration
reminder Y/N
Set reminder to
12 month Y/N
Are you sure to
set xx month Y/N
Calibration
valid: XX month
4.3 Switching ON and OFF the MAS-100™
MAS100 V5.XX
S/N: XXXXX
Calibration
valid: XX months
XXXXX litres
left to aspirate
Volume:XXXX Y/N?
Select other
volumes Y/N? _
™
has built-in dialog software. To accept a parameter or command, answer the question
™
starts to sample the pre-set volume of air, and a
Press „yes“ to switch on the MAS-100
™
for the first time. The firmware
version is shown on the display. The calibration reminder has to be set by
the first user. (see
20.6)
If you select „no” the instrument will go off immediately. If you select „yes“
next window will be displayed.
The reminder is set by the manufacturer to 12 month. If you would like to
change , push „no” as many times until you get the time for recalibration
between 1 and 12 month. If you select 0, the calibration reminder is
deactivated. Push „yes” to accept the displayed value.
If you select „no” the instrument will go off immediately. If you push „yes“ the
selected time for recalibration starts to count down. The last two month will
be displayed as 60 days. After this the menu will proceed as written in (
The time until next calibration is shown . The last 2 month will be displayed
in days.
Press „yes“ to switch on the MAS-100
™
The firmware version V5.XX and the serial number of the instrument is
shown on the display. (see
20.2)
After a few seconds the display will indicate the remaining time until next
calibration.
Again a few seconds after the display will show the total amount of liters
which can be sampled with the battery charge.
The last used volume is displayed. Accept by pushing „yes”. If you push „no”
next step is displayed.
With „yes” you can select other volumes. Accept a volume with „no” the
menu changes into the start menu.
4.3).
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dd.mm.yy hh:mm
™
Start? (Y/N)
With „yes“ start the sampling. With „no” the menu starts with the last used
volume.
If no further manipulations are made on the Instrument and no run is started, the instrument will switch
off automatically after 5 minutes.
Exception:
With the calibration reminder being activated and the calibration deadline
reached, the display first shows „Calibration time expired” and then „Please
recalibrate unit”. If you press „yes“ or „no“, you will see the date on which the
MAS-100
™
was last calibrated. The program then moves to the next prompt.
Note:
The MAS-100
is permanently on if connected to the battery charger.
Note:
After a collection cycle the instrument will display the last volume collected.
It will shut off after 30 minutes unless you press „yes“ or „no“„ to activate the
5-minute automatic shut off.
4.4 Calibration reminder
Calibration time
expired!
Please
recalibrate unit
A calibration reminder is displayed once the calibration expiry date has been
reached. The calibration reminder is set from the manufacturer to 12 month.
The last two month will be displayed as 60 days.
The reminder may be set from 0 up to 12 month. 0 month means
deactivation of calibration reminder.
Last calibration
Volume:XXXX Y/N?
If yes or no is pushed the last calibration date is displayed.
Note:
To program the calibration reminder see Mode 5 (see
4.2 and 13.2).
4.5 Selectabel Mode 3
In parameter Mode 3 it is possible to select between „manual mode”, „template mode” or „selectable
mode” (see
•The „manual mode” is selected if no PC is connected to the MAS-100
20.4)
™
• The „selectable mode” is selected if only a few data are stored and transferred to the PC
• The „template mode” is used if all information is transferred from and to the PC
4.6 Last volume used
After the MAS-100 is started always the last volume or SQS-cycle used will be displayed and may be
used again without changing any parameters.
4.7 Select other volumes
Volume:XXXX Y/N?
If the volume is displayed and „no” is pressed the MAS-100
volume selection menu. If you accept with „yes” the start menu is displayed.
™
changes to the
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™
Select other
volumes Y/N ?
The MAS-100
has 5 pre-set sampling volumes: 50, 100, 250, 500 and
1000 liters. These can be found in parameter Mode 5 under „Change
volumes?” Each of these volumes can be modified between 0 and 2000
liters. Setting a volume to 0 will blank it from the display in the main menu.
Each volume can be re-activated and be displayed again. Accept a
displayed volume by pressing „no“.
4.8 Delay function
Delay: 0:00
Modify ? (Y/N)
If the delay function is activated in Parameter Mode 4, the display shows
„Change delay? (Y/N)“. By choosing „yes“ you may set a start delay
between 1 and 60 minutes. This function makes sense if the room in which
the sampling takes place has to be left during the sampling process.
4.9 User menu
User X
change user? Y/N
If the user menu is activated it is possible to choose between 10 user
names. The user names may be programmed with the MAS-100 C&C
software (see
10.2)
4.10 Start sampling
dd.mm.yy hh:mm To start sampling, press „yes“. If a delayed start has been programmed, the
Start? (Y/N)
sampling cycle only starts when the delay time has elapsed.
Volume [l]: XXXX
Time: h.mm
During the run the display shows the sampled volume and counts down the
time until the total sampling volume is reached.
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4.11 Adjusting Petri dish
Before using the MAS-100 for the fist time you will need to adjust the blue Petri dish support.
Lift off the perforated lid and place a Petri dish on the dish support. Use a 3 mm Allen key to adjust the
three blue jaws until the Petri dish is securely supported and there is no play. Check that the Petri dish is
properly supported by turning the sampling head to the horizontal position. The Petri dish support is now
adjusted. The procedure need only be repeated at most if you change Petri dish manufacturer.
Note:
Do not over-tighten the blue jaws. If you do, the Petri dish may break and
shed plastic debris in the aspiration unit and block the motor.
4.12 Adjusting RODAC plates
New : The MAS-100 may be used with commercially available contact plates. The use of a special
Adapter No. 1.09214.0001 and Sampling head N0. 1.09213.0001 is necessary.
•Take the allen key and exchange the 3
existing blue jaws by removing the allen screw
and replace with the 3 new blue jaws.
•Place the positioning template and mark the
centre (see picture) with a marker pen.
•Remove the positioning template and put the
Adapter ring as shown in the picture bellow.
•Put now your contact plate in the adaptor and
tighten the 3 allen screws. The marked point
should be in the centre of the contact plate as
shown in the picture.
Note:
Tighten the blue jaws and make sure that the stainless steel adapter holds
firmly .
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™
5 Perform a “Manual” air sampling
5.1 Switch the MAS-100™ „ON” for manual sampling
To work in manual mode you just push the yes button to switch on the MAS-100
Note:
The MAS-100
must be in the manual mode. If it is in the selectable or in
the template mode change to manual mode (see
• Place the MAS-100
• Open the perforated lid (with attached dust cover) by rotating counter clock wise.
• Place a closed standard Petri dish
™
on a firm support.
2
filled with agar on top of the dish support.
• Take the lid off the Petri dish.
• Close the MAS-100 perforated lid.
• The sampling head can be adjusted to any angle from horizontal to vertical airflow direction.
• Program the MAS-100 as follows
MAS100 V5.XX
S/N: XXXXX
Press „yes“ to switch on the MAS-100
The firmware version V5.XX and the serial number of the instrument is
shown on the display.
™
Calibration
valid XX months
After a few seconds the display will indicate the remaining time until next
calibration.
Exception:
With the calibration reminder being activated and the calibration deadline
reached, the display first shows „Calibration time expired” and then „Please
recalibrate unit”. If you press „yes“ or „no“, you will see the date on which the
MAS-100
™
was last calibrated. The program then moves to the next prompt.
XXXXX litres
left to aspirate
Again a few seconds after the display will show the total amount of liters
which can be sampled with the current battery capacity.
Volume:XXXX Y/N?
The last used volume is displayed. Accept by pushing „yes”. If you push „no”
next step is displayed.
Select other With „yes” you can select other volumes. Accept a volume with „no” the
volumes Y/N? _
menu changes into the start menu.
User X
change user ? Y/N
Delay: mm:ss
Modify? Y/N
If the user menu is activated (see 8.16) it is possible to change the user with
„yes“ and accept it wit „no“.
Modify „Delay” with „yes” and accept with pressing „no“. If „Delay” is not
active, the start menu will be displayed.
dd.mm.yy hh:mm
Start? (Y/N)
Date and time are displayed. To start the sampling press „yes“. To change
some of the parameters press „no“ and change the desired parameters. If
no further manipulations are made on the instrument and no run is started,
the instrument will shut down automatically after 5 minutes.
.
™
4.5 and 6).
2
Petri dish or if the contact plate adapter is used contact plate.
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™
Note:
The MAS-100
is permanently on if connected to the battery charger.
Volume [l]: XXXX
Time: h.mm
During the run the display shows the sampled volume and counts down the
time until the total sampling volume is reached.
passed
test completed
After the sampling cycle, the message „passed test completed” indicates
that the total volume has been sampled without any disturbances and the
test is valid.
Note:
After a collection cycle the instrument will display the last volume collected.
Press „yes“ or „no“ to activate the 5-minute automatic shut-off.
Volume [l]: XXXX At the end of the sampling the total volume sampled is displayed and the
Time: 0:00
time shows 0:00 and the red (stop) LED is on.
5.2 Sampling interrupted; failed
failed! If „failed repeat test” is displayed the test was interrupted by pressing „no”
repeat test!
during sampling.
Air flow blocked
If the air flow was blocked and the MAS-100 could not get 100 liter/min “air
flow blocked” will be displayed and the red LED is blinking. Quit with „yes” or
„no”
Note:
Make sure that the dust cover was removed before start was pushed, and
there is not to much agar in the Petri dish which could block the wholes on
the sampling head.
•Open the sampling head, cover the Petri dish with the lid and remove the Petri dish from the dish
support.
•The Petri dish is now ready for incubation.
5.3 Switching off the MAS-100™
Volume [l]: XXXX
Time: 0:00
After sampling, the red (stop) LED will light up and the total volume collected
will be displayed. In this position the MAS-100
after 30 minutes. In all other menu positions the MAS-100
™
will automatically shut down
™
switches off
automatically after 5 minutes.
Note:
After a collection cycle the instrument will display the last volume collected.
Press „yes“ or „no“ to activate the 5-minute automatic shut-down.
5.4 Interrupting a test
failed!
repeat test!
If the „no“ button was pressed during sampling, the instrument will display
„failed! repeat test!”. Repeat the test by using a new Petri dish filled with
media.
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Note:
™
If the MAS-100
will not be registered by the software, unless the total volume has been
collected without interruption.
5.5 Airflow blocked
failed!
repeat test!
If the built-in sensor does not attain 100 liters of air per minute, the message
„failed! repeat test!” and „Air flow blocked” appears on the display and the
red LED flashes. Sampling is stopped. Remove the Petri dish and start a
new test. Press „yes“ or „no“ to cancel the error message. Repeat the test.
Air flow blocked
If the air flow was blocked and the MAS-100 could not get 100 liter/min air
flow blocked will be displayed and the red LED is blinking. Quit with „yes” or
„no”
Note:
Make sure that the dust cover was removed before start was pushed, there
is not to much agar in the Petri dish which could block the wholes on the
sampling head.
was activated in the „template mode”, the interrupted test
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6 Perform air sampling in “Template mode”
6.1 Switch the MAS-100™ „ON” for template sampling
To work with templates the calibration MAS100 C&C software is needed. It is possible to download the
software from internet:
provided by the local distributor. More details are given in the Software manual.
Note:
• Place the MAS-100
• Open the perforated lid (with attached dust cover) by rotating counter clock wise.
• Place a closed standard Petri dish filled with agar on top of the dish support.
• Take the lid off the Petri dish.
• Close the MAS-100
• The sampling head can be adjusted to any angle from horizontal to vertical airflow direction.
• Program the MAS-100
MAS100 V5.XX
S/N: XXXXX
Calibration
valid XX months
Exception:
XXXXX litres
left to aspirate
Manual mode
modify? (Y/N)
Template mode
modify? (Y/N)
Template name
Modify? Y/N?
www.mbv.ch . A special communication cable between PC and MAS-100™ is
The MAS-100 must be in the selectable or in the template mode
4.5 and 6)
(see
™
on a firm support.
™
perforated lid.
™
as follows
Press „yes“ to switch on the MAS-100
™
The firmware version V5.XX and the serial number of the instrument is
shown on the display.
After a few seconds the display will indicate the remaining time until next
calibration.
With the calibration reminder being activated and the calibration deadline
reached, the display first shows „Calibration time expired” and then „Please
recalibrate unit”. If you press „yes“ or „no“, you will see the date on which the
MAS-100
™
was last calibrated. The program then moves to the next prompt.
Again a few seconds after the display will show the total amount of litres
which can be sampled with the battery charge.
With „yes“ you can modify from Manual to Template mode. With „no” you
change to next menu point. volume is accepted.
To accept Template mode push „no” . The first Template name will be
displayed.
Choose the Template you like to work with and accept by pressing „no”.
Example: Template name = Insulin 123
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™
Location
Device
Each template may contain up to 10 sampling places defined with Location
and Device.
Push „no” to choose the position you would like to take the sample. If the
position has already been measured and the rum was not interrupted the
position is hidden and appears only after having transferred the data to a PC
or if the values have been erased in the MAS-100 (see Clear protocol data
8.1)
Example:
1. Location name = Fill_Line 123_A, Device = Position 123_A
2. Location name = Fill_Line 123_B, Device = Position 123_B
Delay: mm:ss
Modify? Y/N
If delay menu is activated modify „Delay” with „yes” and accept with pressing
„no“. If „Delay” is not active, the start menu will be displayed.
User X
change user ? Y/N
If the user menu is activated (see
„yes“ and accept it with „no“.
8.16) it is possible to change the user with
Delay: mm:ss
Modify? Y/N
The „Delay” may be accepted by pressing yes and changed by pressing
„no“. If „Delay” is not active, the start menu will be displayed.
dd.mm.yy hh:mm
Start? (Y/N)
Date and time are displayed. To start the sampling press „yes“. To change
some of the parameters press „no“ and change the desired parameters. If
no further manipulations are made on the instrument and no run is started,
the instrument will shut down automatically after 5 minutes.
Note:
The MAS-100
is permanently on if connected to the battery charger.
Volume [l]: XXXX
Time: h.mm
During the sampling the aspirated volume and the remaining sampling time
are displayed.
passed
test completed
After the sampling cycle, the message „passed test completed” indicates
that the total volume has been sampled without any disturbances and the
test is valid.
Note:
After a sampling run the last used volume is displayed. Push „yes“ or „no“ to
shut off the MAS-100 after 5 minutes.
Volume [l]: XXXX Nach dem Sammelvorgang wird das total gesammelte Volumen angezeigt
Time: 0:00
und die verbleibende Zeit ist 0:00 und die rote (stop) LED leuchtet auf.
6.2 Interrupted sampling
failed!
repeat test!
If „failed repeat test” is displayed the test was interrupted by pressing „no”
during sampling.
Air flow blocked
If the air flow was blocked and the MAS-100 could not get 100 liter/min air
flow blocked will be displayed and the red LED is blinking. Quit with „yes” or
„no”
• Open the sampling head, cover the Petri dish with the lid and remove the Petri dish from support.
• The Petri dish is now ready for incubation.
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7 Perform air sampling in “Selectable-Mode”
Selectable mode is used if the user wants both, to work with individual samples and with preset values
in the „Template mode”. In this mode the display asks before each sampling run, whether sampling is to
be performed manually or at a location designated by the template. In „Template mode”, the user is
prompted to select the protocol and location before sampling is started.
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8 Instrument settings “Parameter Mode 4”
Pressing „yes“ and „no“ simultaneously for about 5 seconds after you
Volume XXXX Y/N?
Note:
8.1 Clear protocol data
Clear protocol
data? (Y/N)
8.2 Connecting a Printer
activated the MAS-100 or in any other menu position, will take you to the
instrument settings „Parameter Mode 4”. This mode allows to erase data in
the memory if the „template mode” was used. It is also possible to connect a
printer. All other user-specific data such as date, time, volume, start delay
etc. can be set.
If the MAS-100 is working in the Protected mode (see
13.1) the access
without the MAS-100 C&C Software, is only possible to the following menu
points:
• Print protocol
• Battery discharge
• Anemometer mode
Press „yes” to erase protocol data. If you are in the selectable mode you can
choose between erasing the manual or the template data. With the function
„Clear all prot.” It is possible to erase all data collected in the PC mode. With
the function „Modify? (Y/N) an individual protocol may be selected and the
data erased. During this process the red and green LED’s are flashing and a
message „Clear data in progress” is displayed. Erasing all the protocol data
together may take up to 2 minutes.
The output is configured for a portable thermo printer*
(model on picture: CUSTOM s’print
®
)
A connection cable is available from your supplier.
(* ask MAS-100
™
supplier for other printer models)
8.3 Print protocol
Print
Protocol ? (Y/N)
It is possible to connect a printer directly to the MAS-100
configured for a portable thermo printer (model CUSTOM s’print
A connection cable is available from your supplier.
™
. The output is
®
)
Protocol 1..10 You can choose one of the protocol or print all protocols.
Modify ? (Y/N)
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no data present,
empty memory !
If no data are present and you select „yes” nothing will happen. When you
push „no” the display will show you that no data are present.
No printer
device connected
If „Print protocol” is activated and no printer is connected the display shows
„no“ printer device connected. Push „no“ to go to the next step. With „yes“
back to main menu with „no“ to the user parameter.
Change online
print mode? Y/N
If you want to change the print mode push „yes”. Press as many times „yes”
until you have found the number of samples after which you would like to
have a print out. After the total possible stored amount of samples the next
message will be displayed.
Online print If „yes” is pressed the print mode will be activated or deactivated. If activated
deactivated
next step will be displayed.
Print after xx
samplings Y/N _
If „yes” is pressed the number of samples may be increased before the
samples must be printed out. When the instrument is delivered the max.
number is 50. With the MAS-100 C&C Software this value may be set up to
100. Quit to next menu with „no”.
Print calib.
parameters (Y/N)
It is possible to print the calibration parameters. (see example)
With „no” it is possible to go back to the main menu. With „yes” you continue
in the parameter setting menu.
Example of a calibration parameter printout :
8.4 Back to main menu
Back to main With „yes“ you return to the Start-Menu with „no” you continue in the
Menu? (Y/N)
instrument settings-menu.
8.5 Set time and date
Set time and
Push „no“ to proceed. Push „yes” to choose date format.
date? (Y/N)
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8.6 Selecting date format (EU or US) and changing time and date
Date: EUR
Modify? (Y/N)
The first item in the Parameter menu is the „Date mode“. With „yes“ you can
switch between US and European date format. By pressing „no“ you accept
the displayed format.
Time
hh.mm.ss.
Then the time is displayed. Pressing „no“ places a cursor underneath the
first digit. Press „no“ until the required number is displayed. When you press
„yes“, the cursor moves on to the next digit. Continue until you have set the
correct time.
Date
dd.mm.yy
Now the date is displayed. The cursor moves to the first digit. Pressing „no“
changes the numerical value and „yes“ places the cursor below the next
digit. You return to the start of the „Set time and date” menu. Clicking „no“
takes you to the next prompt. ( Please note that US format is: mm-dd-yy,
EUR format is: dd.mm.yy)
8.7 Battery discharge?
Battery For battery maintenance it is possible to discharge the battery by pressing
discharge? (N)
„yes”. Push „no” to proceed to next position.
Batt. discharge:
XXXXX litres_
For battery maintenance it is possible to discharge the battery by pressing
„yes”. The batteries will discharge while the display shows a decreasing
number of liters and the run and stop LED are blinking.
If you push „no” during discharge the process of discharge will be
interrupted.
Note:
The discharge process may last several hours depending on the actual
battery charge.
Do recharge the MAS-100™ after discharge for at least 3 hours.
8.8 Anemometer mode
Anemometer This mode is used to check the anemometer function. After a start up
mode? (Y/N)
phase.., the anemometer goes to 100 L/min.
Anemometer mode Displays the measured liters.
Please wait..x
Anemometer
If the anemometer has a problem Anemometer error is displayed.
error !!!
8.9 Change volumes
Change Each of the 5 pre-set volumes (standard volumes 50, 100, 250, 500, 1000
volumes? (Y/N)
liters) may be customized. A value between 0 and 2000 liters can be
specified.
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Volume 1 = 50
™
™
Modify? (Y/N)
Press „yes“ to increment the displayed value by 1. By holding down „yes“
you can scroll quickly to the required value. Pressing „no“ takes you to the
next volume. Setting a volume to 0 will delete it from the screen. For
example, you could display just two volumes by setting the other three to 0.
They are activated again as soon as you assign them a value between 1
and 2000. Continue through the volumes until you get to the „change
volumes?” display. Quit with „no” to go to next menu step.
8.10 Delay menu (Change / Activate / Deactivate )
Change
delay? (Y/N)
The MAS-100
has a start menu that enables you, if you wish, to set a delay
time between 1 and 60 minutes before the start of a sampling cycle . The
last used delay time will be displayed. By pressing „yes“, you can set a delay
time between 0 and 60 minutes. If you enter 0 as delay time, no delay is
activated. The MAS-100
™
starts as soon as you press „yes“ at the „Start?”
prompt.
activated
Modify ? (Y/N)
If you never use the delay function, you can suppress the „Delay?” prompt
by deactivating the delay in this menu (to exit the program answer „no“ to
„deactivate delay menu?”). You can reactivate the delay at any time (to exit
the program answer „no“ to „activate delay menu?”).
8.11 Select operation mode
XXXX mode
Modify? (Y/N)
Select manual or Template mode? Use this menu to define how to work
with the MAS-100
™
. There are 3 options, as briefly described below.
8.12 Manual mode
Manual mode
Modify ? (Y/N)
Use Manual mode when you do not wish to establish a PC connection. For
example, when your work does not follow a regular pattern and/or there is
no PC available, it is recommended to work in manual mode.
8.13 Selectable mode
Selectable mode
Modify? (Y/N)
Selectable mode is used when only sometimes data are sent to the PC and
flexibility in the use of the MAS-100
™
must be guaranteed. In this mode the
display asks before each sampling run whether sampling is to be performed
manually or at a location designated by the PC. In PC mode the user is
prompted to select the report and location before sampling is started.
8.14 Template mode
Template mode
Modify? (Y/N)
The MAS-100
as freeware on (
is equipped for data communication. A software is available
www.mbv.ch).
Note:
A communication cable to transfer data between MAS-100
which comes with user instructions for the MAS-100
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separately from your MAS-100 distributor.
™
™
and the PC,
software, is available
™
8.15 Select SQS mode
Select SQS
Mode? (Y/N)
The SQS mode allows you to divide a given volume of air into sub volumes,
over a given period of time. Select „yes” to activate this function
SQS: total time SQS: total time will be displayed if this mode is active.
Modify? (Y/N)
deactivated Deactivated will be displayed if the SQS mode is inactive.
Mode? (Y/N)
SQS: cycles: xx Choose between 1 and 20 cycles. The number of cycles will divide the total
modify? (Y/N)
volume into corresponding sub volumes
SQS time: h:mm Choose between 1 and 24 hours and minutes. Be sure to choose a total
modify? (Y/N)
time in witch the Petri dish does not dry out. Up to 8 hour have been
successfully tested by the manufacturer but have to be validated by the
customer.
[l] CYCLE TIMEAfter setting the relevant parameters the next two windows are displayed
XXXX XX hh:mm
showing the selected volume, the number of cycles and the total sampling
period.
XX.XX.XX hh:mmPush„yes” to start sampling in SQS-mode. If you want to change any of the
Start? (Y/N)
parameters push „no”. You will be directed to the selection menu.
Note:
To work again in normal sampling mode deactivate the SQS-Cycle in the
Parameter 4 Mode.
8.16 User menu
Select user
Menu? (Y/N)
If you press „yes” it is possible to activate or deactivate the user menu. If
activated, it is possible to allocate 1 out of 10 user names to the relevant air
sampling tests.
activated
Modify? (Y/N)
The default names are User 1 etc. To define proper user names you need
the C&C communication and calibration Software. ( see
10.2)
8.17 Back to main menu
Back to main
Menu? (Y/N)
With „yes” the MAS-100
will go to the start menu. With „no” the MAS-100
starts from first menu point of the selected Mode.
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™
9 Sampling head
9.1 Adjustment of Petri dish
Before using the MAS-100
Take off the perforated lid and place a Petri dish on the dish support. Use a 3 mm Allen key (supplied)
to adjust the three blue jaws symmetrical, until the Petri dish is securely supported and it is fixed in
place. Check that the Petri dish is properly supported by turning the sampling head to the horizontal
position. The Petri dish support is now adjusted. This procedure has not to be repeated unless you
change the Petri-dish manufacturer.
Note:
9.2 Sampling head 400 x 0,7
The MAS-100
™
runs with 100 liters/min. The calculated impaction speed is approx. 11 m/sec with the
sampling head with 400 holes with a diameter of 0,7mm.
Note:
9.3 Sterilization of sampling head
The sampling head may be sterilized at 121°C for 20 minutes.
™
the first time you will need to adjust the blue Petri dish support.
Do not over-tighten the blue jaws. The Petri dish may break and plastic parts
could block the unit.
Be sure to use 400 x 0.7 mm Feller conversion table(see
20.1)
10 Software for MAS-100™
10.1 Validated Software for MAS-100
The MAS-100
™
may be connected to a validated LIMS Software from the Canadian Company Novatek.
With this Software it is possible to exchange data between the MAS-100
information you will find over:
http://www.ntint.com/prod-envmon.shtml
10.2 Software download new MAS-100™ C&C
The MAS-100
MAS-100
™
C&C Software is a terminal software which enables the user to communicate with the
™
in an easy way. The user gets all information about the settings in the MAS-100 but is not
authorized to change any calibration parameters. Please find the software on the internet
button „Software”. Choose MAS-100
installed automatically on your PC.
Note:
To communicate between MAS-100
communication cable. The cable is part of the MAS-100
C&C communication kit.
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™
™
and a computer. More
™
™
C&C Software Version 2.7x or higher. The software will be
www.mbv.ch,
and a PC you need a special
™
™
™
11 Interpreting results
First the total microbial count is corrected based on the statistical correction table according to Feller
(see Appendix 20.1), then it is converted to contaminant particles per cubic meter.
The correction table is based on the presumption that, as the number of organisms being impinged on a
given plate during sampling rises, the chance that several organisms will enter the same hole in the
perforated lid is also increasing.
Pr = N [1/N + 1/N-1+ 1/N-2........1/N-r+1]
Pr = Probable statistical total
N = Number of holes in the perforated lid (400)
r = Number of colony-forming units counted on standard Petri dish
For each colony count „r” the table gives a statistically corrected total count „Pr”.
For easy application of this formula, please refer to the table (see Appendix
(A table of statistical corrections according to Feller for the MAS-100
™
in a plastified cover is provided
20.1)
separately with each sampler).
Note:
The MAS-100
automatically converts them to CFU/m
software corrects the results according to Feller and
3
.
4
12 Charging the MAS-100™
12.1 Battery charging
Connect the battery charger on the handle. „Battery charging” appears on the display and the red light is
on. A complete recharging cycle takes about 3.5 hours. With a fully charged battery, the instrument has
a sampling capacity of approximately 7.0 hours. .(value for new batteries)
12.2 Battery discharge
See description in chapter
12.3 Battery status display
Low battery!
Show capacity?
XXXXX litres
left to aspirate
Note:
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8.7
If the battery capacity decreases the MAS-100
will display the total amount
of litres which can still be sampled without recharging the batteries. The
Low battery display appears from a total sampling volume below 10’000
litres. Press yes to see the total amount of volume which is possible to
sample. If you press “no” the MAS-100
™
will start the sampling.
Recharge the batteries as soon as possible (see chapter 12.1).
Use only the MAS-100
charging circuitry of the MAS-100
battery charger to recharge the NiMH battery. The
™
prevents overcharging of the battery.
12.4 Battery replacement
™
If the batteries have to be changed, loosen the bottom screw and replace the batteries with an original
battery pack from the manufacturer. We advise that this is done by a service engineer who has been
instructed by the supplier.
Note:
After changing the battery pack recharge the MAS-100
™
for at least 3.5
hours.
13 Calibration
The MAS-100
provided in the calibration certificate which is delivered with each instrument.
Note:
13.1 Protected mode
If you use the MAS-100 C&C software it is possible to block the calibration value and/or all settings in
the „Parameter Mode 4” see point “Protected mode “ in the Instruction-manual of the software.
Note:
13.2 Calibration reminder
The MAS-100
month is selected the calibration reminder is deactivated. If 6 months is set, the reminder will add 6
months to the actual date in the MAS-100
show the following message:
Calibration time expired! Please recalibrate unit.
When pressing down the „yes“ or „no“ button, the display will show the date of the last calibration. After
releasing the button the menu proceeds to the start line.
Each time the MAS-100
and the reminder is set to the corresponding value.
™
is calibrated in the factory for a mass flow of 100 liters/min. Detailed information are
Only authorized person may exchange any mechanical parts in the
instrument or change any of the software settings in the „service” menu.
To communicate between MAS-100
and a PC you need a special
communication cable. The cable is part of the MAS-100C&C communication
kit.
™
has an integrated calibration reminder. It can be set between 0 and 12 months. If 0
™
. If after 6 months the instrument is turned on, the display will
™
is turned on, this message will be displayed until the instrument is recalibrated
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14 Technical specifications
General:
● Flow rate: 100 Liters 100 liters / min. ± 2.5%
● Standard sampling volumes: 50, 100, 250, 500, 1000 liter
● CE approval: EN 55022 Class B, EN 61000-4-2, ENV 50140,
14.1 Environemental conditions
Altitude: Up to 2000 m or above if specified by manufacturer
Temperature: 0 to 40°C
Maximum relative humidity: 80 percent for temperatures up to 31°C,
Mains supply-voltage: Fluctuations must not exceed ± 10 percent of the
Transient over-voltage: Acc. to INSTALLATION CATEGORIES
Technical modification possible without prior notice.
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between 0 and 2000 liters.
ENV 50204, EN 61000-4-4, ENV 50141
decreasing linearly to 50 percent relative humidity
at 40°C;
nominal voltage; other supply voltage: fluctuations
as stated by the manufacturer
(OVERVOLTAGE CATEGORIES) I,II, and III and
normal category is II;POLLUTION DEGREE 1 or 2
in accordance with IEC 664
™
15 Components check list
The MAS-100
1 MAS-100
1 battery charger
1 allen key 3 mm (for centering the Petri dish)
1 mains cable
1 plastified „Table of statistical corrections according to Feller”
1 calibration certificate
1 calibration certificate for DA-100
1 MAS-100 Operator’s Manual CD
™
is delivered in an plastic case containing the following:
™
, complete system with sampling head (400 x 0.7)
16 Care and maintenance
The MAS-100
The sampling head is autoclavable (20min/121°C). When the MAS-100
area, we suggest to wipe it with a suitable disinfectant. Between sampling cycles, the lid may also be
cleaned with disinfectant. Make sure that the holes in the perforated lid are not clogged.
™
should be periodically calibrated (see 13).
™
is moved to a sterile or „clean”
17 Warranty
With the purchase of the MAS-100
malfunction of electrical and electronic components (see invoice date).
The MAS-100
™
is a laboratory instrument and should only be used by qualified personnel.
Note:
The MAS-100 is calibrated and a screw in the sampling head is sealed. If
the seal is removed by a unauthorized person the warranty will decay.
™
you will receive a 1-year warranty against any failure resulting from
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Perforated lid (400x0.7) 1.09088
Dustcover 1.09084
Mains power supply unit 1.09085
Battery pack NiMH 1.09229
Perforated lid (400x0.7) for “contact” plates 1.09213
Adapter for “contact” plates 1.09214
1.09225
19 References
[1] The Rules Governing Medicinal Products In The European Community
Vol. IV: Guide to Good Manufacturing practice for medicinal products, 1992
[2] MAS-100, Qualification of air sampler systems: The MAS-100
Meier R. und Zingre H., (Swiss Pharma 1-2/00)
[3] New Sampler for the Collection, Sizing, and Enumeration of Viable Airborne Particles,
A. Andersen, U.S. Army Chemical Corps Proving Groung, Dugway, Utha., 1958
[4] Feller, W. An introduction to the probability theory and its application, p. 175.
John Wiley and sons, Inc., New York, 1950
[5] SQS-Sequential air sampling; Validation of the microbial count in the air using the MAS-100;
Swiss Pharama 26 (2004) No.11,9-11
20 Appendix
20.1 Table of statistical corrections according to Feller for SH 400 x 0.7mm
Das bezeichnete Gerät entspricht der einschlägigen grundlegenden Anforderungen der
aufgeführten EG-Richtlinien und Normen. Bei Änderungen am Gerät verliert diese Erklärung
ihre Gültigkeit.
The device named below fulfills the relevant fundamental requirements of the EC directives
and standards listed. In the case of unauthorized modification to the device, this declaration
becomes invalid.