Micro Direct MicroRPM Operating Manual

Respiratory Pressure Meter

Operating Manual

Federal (USA) law restricts this device to sale by or on the

order of a physician or licensed practitioner.

Micro Direct, Inc.

803 Webster Street

Lewiston, ME 04240

1-800-588-3381

www.mdspiro.com

064-45 US

Issue 1.4

September 2016

Table of Contents

Introduction ......................................................................... 1

Package Contents .............................................................. 2

PUMA PC Software ............................................................ 2

Contraindications ................................ ................................ 4

Warnings and Cautions ...................................................... 4

Indications for Use .............................................................. 5

Operation – mouth pressures (PImax/MIP + PEmax/MEP) . 6

PImax (MIP) Test ................................................................ 7

PEmax (MEP) Test ............................................................. 7

Operation – SNIP (Sniff Nasal Inspiratory Pressure) ........... 8

SNIP Test ........................................................................... 9

Switching Off ...................................................................... 9

Battery Low Voltage Indication ......................................... 10

Battery Replacement ........................................................ 10

Cleaning Instructions ........................................................ 11

External Surfaces of the Spirometer ................................. 11

Sterilization ....................................................................... 11

Cleaning accessories ........................................................ 12

Calibration ........................................................................ 12

Servicing ........................................................................... 14

Product Lifetime ................................................................ 14

Trouble Shooting Information ............................................ 15

Symbols ............................................................................ 22

Specifications ................................................................... 23

Consumables / Supporting Products ................................. 24

1

Introduction

The respiratory pressure meter is a hand held instrument
designed for rapid assessment of inspiratory and expiratory
muscle strength. The unit can measure the maximum
inspiratory and expiratory mouth pressures, MIP and MEP,
and the Sniff Nasal Inspiratory Pressure, SNIP. The result
of each measurement is presented in units of cmH2O gauge
pressure on the liquid crystal display screen.

The unit is easy to operate, battery powered and is supplied
with all the necessary attachments required for immediate
use.

The functionality of the unit may be greatly increased when
connected to a PC running PUMA software. This
application has many advanced features including:

 Real time display of pressure/time curves
 Overlay of successive curves
 Predicted values
 Patient database
 Incentive display
 Maneuver quality check
 Maneuver variability measurement

2

Package Contents

The respiratory pressure meter is supplied with the

following items: -

1. Microcomputer unit

2. Rubber mouthpiece (Cat. No. MTH6400)

3. Alkaline PP3 battery

4. Expiration pressure valve assembly (Cat. No. ASS1221)

5. Inspiration pressure valve assembly (Cat. No. ASS1222)

6. Calibration screwdriver

7. Nasal probe sample pack (Cat. No. NPROBE01 x-small;

NPROBE02 small; NPROBE03 medium and
NPROBE04 large)

8. Nasal probe adapter (Cat. No. ASS1091)

9. Mouth pressure bacterial filters (Cat. No. FIL6050)

3 2 4

6 8 2

9

1

SNIP

MIP / MEP

OFF

3 1 7

4

5

3

PUMA PC Software

The functionality of the portable MicroRPM is greatly
increased when connected to the PUMA PC Software, via
an RS232 cable to the Serial Port on the side of the unit.

PUMA PC Software is available as a free download from

http://www.carefusion.co.uk/our-products/respiratory­care/cardio-pulmonary-diagnostics/pulmonary-function­testing/spirometers/spirometry-software-and-firmware­downloads.

The PUMA PC Software is unique, user friendly multi
windows platform for the performance, storage and analysis
of the respiratory muscle strength measurement of PImax or
MIP (Maximum Inspiratory Pressure), PEmax or MEP
(Maximum Expiratory Pressure) and SNIP (Sniff Nasal
Inspiratory Pressure). In addition, PUMA PC Software offers
the user features such as live graphical displays, predicted
values, printing formats, incentives, trends, post medication
or exercise comparisons and additional fatigue indicators.

4

Note: The Respiratory Pressure Meter should only be
connected to a computer that is manufactured in
accordance with EN 60601-1.

Note: Keep the PC out of reach of the patient at all times.

Contraindications

 Pathological conditions resulting in relatively large

pressure swings in the abdomen or thorax.

 Aneurisms
 Uncontrolled hypertension
 Urinary incontinence

Warnings and Cautions

The following terms are used as follows in this manual

Caution: Possibility of injury or serious damage
Warning: Conditions or practices that could result in

personal injury
Please Note: Important information for avoiding damage to

the instrument or facilitating operation of the instrument.
Note: The device should be used by qualified personnel

trained in lung function testing.

CAUTION: Read the manual before use.

CAUTION: For batteries, do not attempt to charge, connect

improperly, or dispose of in fire as there is possibility of

leakage or explosion. Follow manufacturer’s

recommendation for proper disposal.

5

WARNING: The instrument is not suitable for use in the
presence of explosive or flammable gases, flammable
anesthetic mixtures or in oxygen rich environments.

CAUTION: Bacterial filters are single patient use. If used on
more than one patient, there is a risk of cross-infection.
Repeated use may increase air resistance and lead to an
incorrect measurement.

PLEASE NOTE: The product and the battery you
have purchased should not be disposed of as
unsorted waste. Please utilize your local recycling
facility for the disposal of this product.

PLEASE NOTE: Degree of protection against Ingress of
Water is IPX0.

CAUTION: When you connect the Respiratory Pressure
Meter to other equipment, always make sure that the whole
combination complies with the international safety standard
IEC 60601-1 for medical electrical systems. During
measurements, connect the Respiratory Pressure Meter
only to computers that comply with IEC/EN 60601-1 /
ANSI/AAMI ES60601-1:2005.

Indications for Use

The MicroRPM (Respiratory Pressure Meter) is a hand held
diagnostic instrument designed for rapid assessment of
inspiratory and expiratory muscle strength. The unit can
measure the maximum inspiratory and expiratory mouth
pressures, MIP and MEP, and the Sniff Nasal Inspiratory

6

Pressure, SNIP. The system is intended for use with adults
and pediatric patients over the age of 3 years in hospitals,
physician offices, laboratories and occupational health
testing environments.

Operation – mouth pressures (PImax/MIP +
PEmax/MEP)

Insert the battery into the battery compartment at the rear of
the MicroRPM.

Fit the required pressure valve assembly (‘Inspiratory’ for

PImax (MIP), ‘Expiratory’ for PEmax (MEP)) into the

MicroRPM; insert a new bacterial filter into the pressure
valve assembly and then the rubber flanged mouthpiece
onto the bacterial filter as shown below.

7

PImax (MIP) Test

Slide the MicroRPM switch from the “off” position to the
MIP/MEP position, while applying no pressure to the
mouthpiece. Rotating segments will be displayed while the
unit performs an auto-zero function.

When the MicroRPM is ready a ‘beep’ will be heard and ‘0’
will be displayed.

To perform the test, instruct the subject to insert the
mouthpiece into the mouth, ensuring the flange is positioned

over the gums and inside the lips, while the ‘bite blocks’ are

between the teeth.
The subject should then exhale to RV (Residual Volume),

lungs empty, then perform a ‘Mueller’ maneuver, a forced

inhalation against the MicroRPM with as much effort as
possible for as long as possible (minimum of 2 seconds).

The display will report the result, the maximum average
inspiratory pressure sustained over a 1 second period of the
test, in centimeters of water (cmH20). Ideally, the subject
should repeat this test three times to establish the best
value.

PEmax (MEP) Test

Slide the MicroRPM switch from ‘Off’ to ‘MIP/MEP’, while
applying no pressure to the mouthpiece. Rotating segments
will be displayed while the unit performs an auto-zero
function.

When the MicroRPM is ready a ‘beep’ will be heard and ‘0’

displayed.
To perform the test, instruct the subject to insert the

mouthpiece into the mouth, ensuring the flange is positioned

8

over the gums and inside the lips, while the ‘bite blocks’ are

between the teeth.
The subject should then inhale to TLC (Total Lung

Capacity), lungs full, then perform a ‘Valsalva’ maneuver, a

forced exhalation against the MicroRPM with as much effort
as possible for as long as possible (minimum 2 seconds).

The display will report the result, the maximum average
expiratory pressure sustained over a 1 second period of the
test, in cmH2O. Ideally, the subject should repeat this test
three times to establish a best value.

To repeat either the PImax or PEmax tests, the MicroRPM
must first be returned to the ‘Off’ position.

Operation – SNIP (Sniff Nasal Inspiratory Pressure)

Insert the battery into the rear of the MicroRPM.
Fit the nasal probe adapter into the MicroRPM and then

attach the correct size nasal probe, as shown below.

Nasal probe

2

Microcomputer unit

Nasal plug
adapter

9

The correct size (1-4) can be determined by fitting a nasal
probe to the unit then firmly inserting the nasal probe into a
nostril. Instruct the subject to block the open nostril with a
finger and then to attempt a sniff. The correct nasal probe
has been selected once there is not leakage around the
nasal probe.

SNIP Test

Slide the MicroRPM switch from ‘Off’ to ‘SNIP’, while

applying no pressure to the nasal probe. Rotating segments
will be displayed while the unit performs an auto-zero
function.

When the MicroRPM is ready a ‘beep’ will be heard and ‘0’

displayed.
To perform the test, instruct the subject to insert the chosen

nasal probe firmly into a nostril, while ensuring the other
nostril remains open throughout the test.

The subject should then breathe normally and at the end of
a normal tidal expiration, FRC (Functional Residual
Capacity), be instructed to perform a short, sharp voluntary
sniffing maneuver with as much effort as possible.

The display will report the result, the peak inspiratory nasal
pressure, in cmH2O.

On subsequent tests, the MicroRPM will continue to display
the highest SNIP value, overwriting previous values. Ideally,
the subject should repeat this test 10-15 times to determine
the highest value.

Switching Off

The MicroRPM is switched off by sliding the switch back to
the ‘Off’ position.

10

Battery Low Voltage Indication

The battery level is checked when the unit is switched on.

When the battery is nearly exhausted ‘bAt’ is displayed

before the auto-zero procedure begins. The unit may be
used when this occurs provided the test is performed
immediately. The battery should be replaced as soon as
possible.

When the battery is completely exhausted, the unit will beep
twice and turn itself off immediately after turning on.

Note: If the respiratory pressure meter is not used for long
periods, the battery should be removed to prevent damage
to the instrument by possible leakage.

Battery Replacement

Locate the sliding cover situated on the rear of the unit,
toward the bottom of the device.

Place your thumb over the round thumb indent, press gently
and slide the cover to the right to remove it from the unit.

Lift the old battery out and holding the battery terminal by
the plastic body, pull it off the old battery.

Plug the new battery into the battery terminal, taking care
that the correct polarity is observed.

Push the battery back into the battery holder and replace
the battery cover onto the guides. Slide the battery cover to
the left until it is fully in place.

Note: Please remove the battery if the meter is likely to be
unused for some time.

11

CAUTION: Do not open the battery cover when the device
is turned on.

CAUTION: The operator should not touch the contacts of
the battery and the patient at the same time.

Please Note: Dispose of the waste battery in accordance
with your local waste battery regulations.

Cleaning Instructions

Disinfection of contaminated parts is only effective after
careful preliminary cleaning. Please follow the
manufacturer’s instructions for the solution you are using.

The device must not be wiped with any aqueous solutions
and must not be exposed to solvents e.g. alcohol, chloride
solutions, as there are electronic components inside that will
be permanently damaged.

CAUTION: Switch off the device before cleaning.

External Surfaces of the Spirometer

CAUTION: Do not attempt to wash or immerse the

Respiratory Pressure Meter in water or cleaning fluid, as
there are electronic components inside that will be
permanently damaged.

The external surfaces of the pressure meter and the
inspiratory and expiratory valves may be wiped with a
disinfection wipe such as a Protex wipe (order #48-70). This
should be performed after every patient.

Sterilization

The rubber flanged mouthpieces can be sterilized using
ETO – Ethylene Oxide Sterilization.

12

Cleaning accessories

The MicroRPM unit is protected from contamination by the
Bacterial Filter (36-FIL6050) during mouth pressures
measurements.

The Rubber Flanged Mouthpiece (MTH6400), the Expiratory
and Inspiratory Pressure Valve Assembly (ASS1221 and
ASS1222) and the Nasal Probes (NPROBE01, NPROBE02,
NPROBE03, NPROBE04), however, may be immersed in a
cold sterilizing solution. Rinse thoroughly and allow to dry
before reassembly.

Important note: Used mouthpieces and Nasal Probes,
which are not sterilized, must be disposed of immediately
after each use.

If there are changes on the material surfaces (cracks,
brittleness) the respective parts must be disposed of.

Calibration

Calibration is factory set and should remain stable
indefinitely. However, calibration may be checked by
connecting the device to a manometer as shown below:

Manometer

cm H O

2

0

2
1

3

6

4

5

8
7

9

Syringe

10

Connecting
line

Female
Luer
T Piece

Nasal plug
adapter

13

Turn the respiratory pressure meter on to the SNIP position.
Very slowly fill the syringe until a negative pressure of

between 200 and 300 cmH2O is obtained on the
manometer.

The reading on the respiratory pressure meter should be
within 3% of the manometer reading.

If adjustment is required, the following procedure must be
followed.

The calibration may only be adjusted in a positive direction
as the meter monitors the peak pressure value. Therefore,
if the respiratory pressure meter reading was greater than
the manometer reading the calibration screw must be turned
anti-clockwise a few turns before calibration is attempted.

Serial
port

Calibration
screw

Connect the respiratory pressure meter to the manometer
as previously shown. Fill the syringe to obtain the required
negative pressure and turn the calibration screw slowly in a
clockwise direction until the same value is displayed on the
meter.

14

Servicing

If your unit requires service or repair, please see page 24
for contact details.

A full service manual including circuit diagrams and parts list
is available on request.

Product Lifetime

The MicroRPM is designed for a product lifetime of five
years.

15

Trouble Shooting Information

Should you encounter problems operating your MicroRPM
unit, please consult the table below:

Problem

Possible Cause

Solution

Unit will not turn
on
Battery is
spent/discharged

Replace the
battery

Slide switch
connection

Return unit for
servicing

Display shows
reading before
test has been
performed

Internal tubing to
pressure sensor
kinked

Return unit for
servicing

Safety Designation per IEC 60601-1

Type of protection against electrical
shock

Internally powered
Equipment

Degree of protection against
electrical shock

Type B applied part

Power Equipment

Battery

Battery Life

2000 tests

Degree of Electrical connection
between equipment and patient

Equipment designed
as non-electrical
connection to the
patient

Degree of mobility

Portable

Mode of operation

Continuous

Classifications according to IEC 60601-1

Respiratory Pressure Meter

Applied part, type B

WARNING: No modification of this equipment is allowed.

16

WARNING: Do not connect devices that are not specified
as part of the system

Note: When you connect other equipment to the unit,
always make sure that the whole combination complies with
the international safety standard IEC 60101-1 for medical
electrical systems. During measurements, connect the
MicroRPM only to computers that comply with IEC/EN
60601-1 / ANSI/AAMI ES60601-1:2005.

WARNING: The user must not touch any conductive parts
and the patient at the same time.

Electromagnetic Compatibility (EMC) to EN60601­1:2007

WARNING: Use of portable phones or other radio frequency (RF)

emitting equipment near the system may cause unexpected or
adverse operation.

The MicroRPM has been tested to EN60606-1-2:2007, regarding
the ability to operate in an environment containing other
electrical/electronic equipment (including other medical devices).

The purpose of this testing is to ensure that the MicroRPM is not
likely to adversely affect the normal operation of other such
equipment and that other such equipment is not likely to adversely
affect the normal operation of the MicroRPM.

Despite the testing of the MicroRPM that has been undertaken,
normal operation of the MicroRPM can be affected by other
electrical/electronic equipment and portable and mobile RF
communications equipment.

As the MicroRPM is medical equipment, special precautions are
needed regarding EMC (electromagnetic compatibility).

It is important that the MicroRPM is configured and installed /put
into service, in accordance with the instructions/guidance provided
herein and is used only in the configuration as supplied.

17

Changes or modifications to the MicroRPM may results in
increased emissions or decreased immunity of the MicroRPM in
relation to EMC performance.

The MicroRPM should be used only with the accessories (RS232
cables) supplied (which are referenced in the accessories section
of this manual). None of the MicroRPM cables should be
extended in length by the user.

If any cables are extended by the user or non-approved
accessories are used, this may result in an increased level of
emissions or decreased level of immunity, in relation to the
MicroRPM’s EMC. None of the MicroRPM accessories should be
used with other devices, as this may result in an increased level of
emissions or decreased level of immunity, in relation to the other
devices’ EMC.

The MicroRPM has a minimum basic performance – The
respiratory pressure readings on the product must remain within a
tolerance of +/- 3%, and the unit firmware must not cease
responding. Warning: In the vent the product is operated in the
presence of significant electromagnetic fields (particularly in the
frequency range 40-60MHz) while in the PC connected mode,
ensure the results on the unit and PC are the same. If the results
differ, then relocating the product away from sources of
interference should resolve any issue.

WARNING: The MicroRPM should not be used adjacent to or
stacked with other equipment. If adjacent or stacked use with
other equipment is necessary, the MicroRPM and the other
equipment should be observed/monitored, to verify normal
operation in the configuration in which it will be used.

18

Guidance and Manufacturer’s Declaration – Electromagnetic Emissions

The MicroRPM is intended for use in the electromagnetic environment specified
below. The customer or the user of the MicroRPM should assure that it is used in
such an environment

Emission Test

Compliance

Electromagnetic Environment ­Guidance

RF emissions
CISPR 11

Group 1

The MicroRPM uses RF energy only for
its internal function. Therefore, its RF
emissions are very low and are not likely
to cause any interference in nearby
electronic equipment

RF emissions
CISPR 11

Group B

The MicroRPM is suitable for use in all
establishments, including residential
establishments and those directly
connected to the public low-voltage
power supply network that supplies
buildings used for domestic purposes

Harmonic emissions
IEC61000-3-2

Not Applicable

Voltage fluctuations /
flicker emissions
IEC61000-3-3

Not Applicable

Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The MicroRPM is intended for use in the electromagnetic environment specified

below. The customer or the user of the MicroRPM should assure that it is used in
such an environment.

Immunity Test

IEC 60601 Test

Level

Compliance

Level

Electromagnetic

Environment -

Guidance

Electrostatic
discharge (ESD)
IEC61000-4-2

+/- 6 kV contact
+/- 8 kV air

+/- 6 kV contact
+/- 8 kV air

Floors should be
wood, concrete or
ceramic tile. If floors
are covered with
synthetic material, the
relative humidity
should be at least
30%

Electrical fast
transient / burst
IEC61000-4-4

+/- 2 kV for power
supply lines

+/- 1 kV for input /
output lines

+/- 1 kV for
input/output lines

Mains power quality
should be that of a
typical commercial or
hospital environment

Surge
IEC61000-4-5

+/- 1 kV line(s) to
line(s)
+/- 2 kV line(s) to
earth

Not Applicable

Mains power quality
should be that of a
typical commercial or
hospital environment

19

Voltage dips,
short
interruptions and
voltage
variations on
power supply
input lines
IEC61000-4-11

< 5% UT
(> 95% dip in UT)
For 0.5 cycle

40% UT
(60% dip in UT) for
5 cycles

70% UT
(30% dip in UT) for
25 cycles

<5% UT (> 95%
dip in UT) for 5 s

Not Applicable

Mains power quality
should be that of a
typical commercial or
hospital environment.
If the user of the
MicroRPM requires
continued operation
during power mains
interruptions, it is
recommended that
the MicroRPM be
powered from an
uninterruptible power
supply or a battery

Power frequency
(50/60 Hz)
Magnetic field
IEC61000-4-8

3 A / m

3 A / m

Power frequency
magnetic fields should
be at levels
characteristic of a
typical location in a
typical commercial or
hospital environment.

NOTE UT is the a.c. mains voltage prior to application of the test level.

Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The MicroRPM is intended for use in the electromagnetic environment specified

below. The customer or the user of the MicroRPM should assure that it is used in
such an environment.

Immunity

Test

IEC 60601

Test Level

Compliance

Level

Electromagnetic Environment ­Guidance

Portable and mobile RF
communications equipment should
be used no closer to any part of the
MicroRPM, including cables, than
the recommended separation
distance calculated from the
equation applicable to the frequency
of the transmitter.

20

Conducted RF
IEC61000-4-6

Radiated RF
IEC61000-4-3

3 Vrms 150
kHz to 80
MHz

3 V/m 80
Mhz to 2.5
Ghz

3 V

3 V/m

Recommended separation
distance (d)

d = 1.2√P
d = 1.2√ P 80 MHz to 800 MHz
d = 2.3√ P 800 MHz to 2.5 GHz

Where P is the maximum output
power rating of the transmitter in
watts (W) according to the
transmitter manufacturer and d is
the recommended separation
distance in meters (m).

Fields strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey,

a

should be less than the compliance
level in each frequency range. b

Interference may occur in the
vicinity of equipment marked with
the following symbol:

NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects and
people.

a

Field strengths from fixed transmitters, such as base stations for radio (cellular /
cordless) telephones and land mobile radios, amateur radios, AM and FM radio
broadcast and TV broadcast cannot be predicted theoretically with accuracy. To
assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in
the location in which the MicroRPM is used exceeds the applicable RF compliance
level above, the MicroRPM should be observed to verify normal operation. If
abnormal performance is observed, additional measures may be necessary, such as
re-orientating or relocating the MicroRPM

b

Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3
V / m

21

Recommended separation distances between portable and mobile RF
communications equipment and the MicroRPM

The MicroRPM is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the MicroRPM
can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the
MicroRPM as recommended below, according to the maximum output power of the
communications equipment.

Rated Maximum
Output Power of
Transmitter in
Watts (W)
Separation Distance in Meters (m) according to
Frequency of Transmitter

150 KHz to 80
MHz

d = 1.2 √ P

80 MHz to 800
MHz

d = 1.2 √ P

800 MHz to 2.5
GHz

d = 2.4 √ P

0.01

0.12

0.12

0.23

0.1

0.38

0.38

0.73

1

1.2

1.2

2.3

10

3.8

3.8

7.3

100

12

12

23

For transmitters rated at a maximum output power not listed above, the
recommended separation distance d in meters (m) can be estimated using the
maximum output power rating of the transmitter in Watts (W) according to the
transmitter manufacturer.

NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency
range applies.

NOTE 2 These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures objects and
people.

22

Symbols

Type B device

In accordance with Directive 93/42/EEC

Disposal in compliance with your local recycling
facility

Consult the instructions for use

Date of Manufacture

Manufacturer

Serial Number

Single Patient Use

Rx only

Federal U.S. law restricts this device to sale by or
on the order of a physician (Rx only)

23

Specifications

Measurements

Maximum Expiratory Pressure (MEP)
Maximum Inspiratory Pressure (MIP)
Sniff Nasal Inspiratory Pressure (SNIP)

With PumaTM

Maximum Rate of Pressure
Development (MRPD)
Maximum Rate of Relaxation (MRR)

Operating Pressure

+/- 300 cmH2O (+/- 5 PSID)

Burst Pressure

+/- 700 CmH2O (+/- 20 PSID)

Accuracy

+/- 3%

Resolution

1 cmH2O

Power Supply

Single Alkaline 9V battery

Dimensions

~6.5” x 2.5” x 1”

Weight (Unit with battery)

~ 6 ounces

Weight (in carry case)

~1 pound 10 ounces

Operating Temperature

32 – 104 0F

Operating Humidity

30% - 90% RH

Storage & Transport
Temperature

-4 – 158 0F

Storage & Transport
Humidity

10% - 90% RH

24

Consumables / Supporting Products

Cat. No. Description

MTH6400 Rubber mouthpiece
ASS1221 Expiration pressure valve assembly
ASS1222 Inspiration pressure valve assembly
FIL6050 Mouth pressure bacterial filters
NPROBE00 Nasal probes sizes 1 to 4
NPROBE01 Extra small nasal probes (10 per box)
NPROBE02 Small nasal probes (10 per box)
NPROBE03 Medium nasal probes (10 per box)
NPROBE04 Large nasal probes (10 per box)
ASS1091 Nasal probe adapter
48-70 Protex Disinfectant Wipe (100/canister)

To place an order for consumables/supporting products

or for general enquiries please contact Micro Direct on:
Tel: [phone]

Toll-Free: [phone] (US and Canada only)
Fax: [phone]
Email: [e-mail]

[e-mail]

Website: www.mdspiro.com