806
Table of contents
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806 Exchange Unit
Manual
8.806.8003EN
Metrohm AG
CH-9101 Herisau
Switzerland
Phone +41 71 353 85 85
Fax +41 71 353 89 01
info@metrohm.com
www.metrohm.com
806 Exchange Unit
Manual
8.806.8003EN 09.2012 ek/dm
Teachware
Metrohm AG
CH-9101 Herisau
teachware@metrohm.com
This documentation is protected by copyright. All rights reserved.
Although all the information given in this documentation has been
checked with great care, errors cannot be entirely excluded. Should you
notice any mistakes please send us your comments using the address
given above.
Documentation in additional languages can be found on
http://products.metrohm.com under Literature/Technical documenta-
tion.
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Table of contents
806 Exchange Unit
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III
Table of contents
1
Introduction 1
1.1 About the documentation ................................................... 1
1.1.1 Symbols and conventions ........................................................ 1
1.2 Safety instructions ................................................................ 2
1.2.1 Tubing and capillary connections ............................................. 2
1.2.2 Flammable solvents and chemicals ........................................... 2
1.2.3 Filling the dosing cylinder ........................................................ 3
1.3 Recycling and disposal ......................................................... 3
2 Construction of the 806 Exchange Unit 4
2.1 Total view .............................................................................. 4
2.2 Components of the 806 Exchange Unit .............................. 6
3 Installation 9
3.1 Setting up the instrument .................................................... 9
3.1.1 Packaging ................................................................................ 9
3.1.2 Checks .................................................................................... 9
3.1.3 Location .................................................................................. 9
3.2 Start-up .................................................................................. 9
3.2.1 Preparing the exchange unit .................................................... 9
3.2.2 Attaching the exchange unit .................................................. 10
3.2.3 Filling the tubings .................................................................. 12
3.2.4 Buret tips ............................................................................... 13
3.2.5 Removing the exchange unit ................................................. 14
3.3 Mounting the components ................................................ 14
3.3.1 Mounting the thermostat casing ............................................ 14
3.3.2 Mounting the flat stopcock ................................................... 16
3.3.3 Mounting the tubings on the flat stopcock ............................ 17
4 Mode of operation 19
4.1 Filling the dosing cylinder and dosing .............................. 19
5 Handling and maintenance 21
5.1 Care and upkeep ................................................................. 21
5.1.1 Disassembling the exchange unit ........................................... 21
5.1.2 Cleaning the cylinder and piston ............................................ 22
5.1.3 Assembling the exchange unit ............................................... 23
5.1.4 Flat stopcock blocked ............................................................ 24
5.2 Chemical resistance and materials .................................... 25
5.2.1 Solutions ............................................................................... 25
5.2.2 Body ...................................................................................... 25
Table of contents
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IV
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806 Exchange Unit
5.2.3 Materials ............................................................................... 25
5.3
GLP - Validation .................................................................. 26
6 Troubleshooting 27
6.1 Problems ............................................................................. 27
7 Appendix 30
7.1 Buret data ........................................................................... 30
7.2 Dosing accuracy .................................................................. 30
7.2.1 Typical measurement deviation .............................................. 30
7.2.2 The ISO/EN/DIN standard 8655-3 ........................................... 31
8 Accessories 32
8.1 Scope of delivery ................................................................ 32
8.1.1 806 Exchange Unit 6.3026.xxx .............................................. 32
8.2 Optional accessories ........................................................... 34
Index 36
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Table of figures
806 Exchange Unit
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V
Table of figures
Figure 1 806 Exchange Unit ............................................................................ 4
Figure 2 806 Exchange Unit - Components ..................................................... 6
Figure 3 Thermostat casing ........................................................................... 15
Figure 4 Flat stopcock ................................................................................... 16
Figure 5 Dosing/Filling .................................................................................. 19
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1 Introduction
806 Exchange Unit
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1
1 Introduction
The 806 Exchange Unit is a versatile buret unit which can be operated
with various Metrohm dosing devices or titrators. The 806 Exchange Unit
is suitable for simple dosings or titrations.
Specifications concerning the exchange unit and the reagent can be
stored in the integrated data chip. This data can be read out and updated
by a suitable instrument.
1.1
About the documentation
1.1.1 Symbols and conventions
The following symbols and styles are used in this documentation:
Cross-reference to figure legend
The first number refers to the figure number, the
second to the instrument part in the figure.
Instruction step
Carry out these steps in the sequence shown.
Method Dialog text, parameter in the software
File ▶ New Menu or menu item
[Next] Button or key
Warning
This symbol draws attention to a possible life hazard
or risk of injury.
Warning
This symbol draws attention to a possible hazard due
to electrical current.
Warning
This symbol draws attention to a possible hazard due
to heat or hot instrument parts.
Warning
This symbol draws attention to a possible biological
hazard.
1.2 Safety instructions
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2
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806 Exchange Unit
Caution
This symbol draws attention to a possible damage of
instruments or instrument parts.
Note
This symbol marks additional information and tips.
1.2 Safety instructions
1.2.1
Tubing and capillary connections
CAUTION
Leaks in tubing and capillary connections are a safety risk. Tighten all
connections well by hand. Avoid applying excessive force to tubing
connections. Damaged tubing ends lead to leakage. Appropriate tools
can be used to loosen connections.
Check the connections regularly for leakage. If the instrument is used
mainly in unattended operation, then weekly inspections are manda-
tory.
1.2.2 Flammable solvents and chemicals
WARNING
All relevant safety measures are to be observed when working with
flammable solvents and chemicals.
￭ Set up the instrument in a well-ventilated location.
￭ Keep all sources of flame far from the workplace.
￭ Clean up spilled liquids and solids immediately.
￭ Follow the safety instructions of the chemical manufacturer.
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1 Introduction
806 Exchange Unit
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3
1.2.3 Filling the dosing cylinder
CAUTION
If a buret tip is clogged, then it could happen that no liquid will be aspi-
rated when the dosing cylinder is being filled. A vacuum can arise as a
result.
If you then remove the exchange unit from the instrument, the piston
could destroy the dosing cylinder.
Do not fail to loosen the tubing connections on the dosing cylinder
first, before you remove the exchange unit. This will eliminate the vac-
uum.
1.3
Recycling and disposal
This product is covered by European Directive 2002/96/EC, WEEE – Waste
from Electrical and Electronic Equipment.
The correct disposal of your old equipment will help to prevent negative
effects on the environment and public health.
More details about the disposal of your old equipment can be obtained
from your local authorities, from waste disposal companies or from your
local dealer.
2.1 Total view
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4
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806 Exchange Unit
2 Construction of the 806 Exchange Unit
2.1
Total view
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Figure 1 806 Exchange Unit
1
Tubing connection (6.1805.080)
Length 25 cm
2
Threaded stopper (6.1446.080)
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2 Construction of the 806 Exchange Unit
806 Exchange Unit
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5
3
Bottle attachment (6.1602.105)
Of PFA/PP, thread GL45
4
Tubing connection (6.1805.010)
Length 13 cm (6.1805.050 with 1 mL cyl.)
5
PCTFE/PTFE flat stopcock (6.1542.020)
Or ceramic stopcock 6.1542.010
6
Storage vessel (6.1228.000)
For buret tips or electrodes
7
Plate holder (6.2046.070)
For name plates
8
Nominal volume
9
Data chip
On the underside of the buret
10
Adsorber tube (6.1619.010)
Adsorber tube 6.1619.010
11
SGJ clip (6.2023.020)
Of POM
12
Tubing connection (6.1805.100)
Length 40 cm
13
Bottle with thread (6.1608.23)
Amber glass, thread GL45
14
Antidiffusion tip (6.1543.200)
Of ETFE/FEP, for titrations
15
Link stopper (6.1446.030)
16
Storage vessel (6.1228.000)
For buret tips or electrodes
17
Body (6.1576.XXX)
.110 for 1 mL cylinder
.150 for 5 mL cylinder
.210 for 10 mL cylinder
.220 for 20 mL cylinder
.250 for 50 mL cylinder
2.2 Components of the 806 Exchange Unit
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6
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806 Exchange Unit
2.2 Components of the 806 Exchange Unit
Figure 2 806 Exchange Unit - Components
1
Tubing connection (6.1805.080)
Length 25 cm
2
Tubing connection (6.1805.100)
Length 40 cm
3
Tubing connection (6.1805.010)
Length 13 cm (6.1805.050 with 1 mL cyl.)
4
Threaded stopper (6.1446.080)
5
Torque key (6.2739.000)
For loosening tubing nipples
6
Paraffin fat (6.2803.010)
For dosing pistons, 2 g
7
Insert for key (6.2739.030)
For loosening the light protection
8
Light protection (6.1563.030)
Of PETG
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