27
Chemical decontamination - Single and multichannel models
You may choose to decontaminate your pipette chemically, in accordance with your own
procedures.
Whatever decontaminant you use, check that it is compatible with the plastics used in the
construction of the pipette (see Chapter 14).
-
Parts that may not be immersed
1/ Wipe the handle of the pipette with a soft-cloth or lint-free tissue covered with the chosen
decontaminant.
2/ Wipe the handle of the pipette with a soft-cloth or lint-free tissue covered with distilled water.
-
Parts that may be immersed
The following components only can be immersed in a decontaminant solution:
• Single channel models ->tip-ejector, tip holder (both parts), connecting nut, piston (including
holder) and guide.
• Multichannel models -> tip-ejector and ejector locks.
Please note that although the lower part of VWR Electronic multichannel Pipette can withstand a
few number of autoclaving cycles, we do not recommend autoclaving it.
1/ Disassemble the pipette as described in chapter 13.
2/ Immerse the components in the decontaminant solution or wipe them according the instructions
given by the manufacturer or supplier of the decontaminant.
3/ Rinse the individual components with distilled or sterile water.
4/ Leave the parts to dry by evaporation or wipe them with a clean, lint-free tissue or soft-cloth.
5/ Lubricate the piston and reassemble the pipette according to the instructions given in this
chapter.
15
LEAK TEST
This test may be performed at any time to check that the pipette does not leak, especially after
performing a maintenance or decontamination procedure. If a pipette fails this test, you should
replace the faulty part (e.g. O-ring, tip-holder...) and repeat this test, after making sure that the
pipette is correctly reassembled.
• Fit a suitable Tip
• Set the pipette to the nominal volume
• Aspirate the nominal volume from a beaker of distilled water
• Hold the pipette in the vertical position and wait for 20 seconds
• If a water droplet appears at the end of the tip there is a leak (refer to chapter 16)
• If you see no droplet, re-immerse the tip below the surface of water
• The water level inside the tip should remain constant; if the level goes down there is a leak (refer
to chapter 16)
Summary of Contents for VWR 10
Page 31: ...31 19 REPLACEMENT PARTS COMING SOON...
Page 32: ...32 APPENDIX 1 EXAMPLE OF A PERFORMANCE CHECK example with VWR10 at 1 l...
Page 33: ...33 APPENDIX 2 Z FACTOR...
Page 52: ...52...
