Drummond Hood Mate Pipet-Aid 300 Panduan Pemasangan & Pengoperasian - Halaman 7
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Halaman CetakThe specifications for the Drummond filter are .45 µm for the hydrophilic
layer and .8 µm for the hydrophobic layer. Most competitive pipetting units
use a single layer hydrophobic membrane with ratings of either .22 µm or
.45 µm. These filters protect the handle only. If challenged with an aqueous
solution, the filter will prevent the liquid from entering the handle; however,
it can be subsequently blown out and pipetting can be continued. This
action creates an aerosol generator just above the pipet and all subsequent
dispensing are at risk of being contaminated. While the user may think he
or she is sterilizing the air entering the pipet, they are in fact introducing
contamination.
The most effective safety measure to prevent contamination is the cotton
or fiber plug in each pipet. Even if a sterile filter is installed in a Pipet-Aid,
the first time an aerosol comes in contact with the bottom membrane, the
filter is rendered forever nonsterile. The only thing that prevents this from
happening is the plug in the pipet itself, which prevents aerosols from
leaving the pipet and prevents them from entering. Drummond "self-locking"
TC filters are supplied nonsterile because we believe there is no effective
and practical method to maintain sterility in these devices.
S S e e r r v v i i c c e e
Drummond Scientific Company supplies a one year warranty on all Pipet-Aid
Products. Spare parts can be ordered from your favorite laboratory supply
firm, or by calling our toll-free number 1-800/523-7480.
If you have any questions or you need assistance our service department
is available Monday through Friday, from 8:30 AM to 4:30 PM EST.
R R e e p p l l a a c c e e m m e e n n t t P P a a r r t t s s
C C a a t t . . N N o o . .
4-000-002...............................................................Rubber Insert (2/Pk)
4-000-051...............................................................Replacement Filters (5/Pk)
4-000-057...............................................................TC Gasket (Pair)
4-000-079...............................................................Nosepiece (Black)
4-000-080...............................................................Power Supply, 110 V
4-000-082...............................................................Backing Plate
4-000-083...............................................................Replacement Tape
4-000-084...............................................................Valve Body Assembly
4-000-085...............................................................Coiled Hose
4-000-086...............................................................Hose Support
4-000-087...............................................................Nosepiece Kit
Model #_______________________
Serial #________________________
D D e e s s c c r r i i p p t t i i o o n n
(1 black nosepiece, 4 filters,
TC gasket/pair, & rubber insert)
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