DelAgua OXFAM-DELAGUA, Руководство пользователя

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OXFAM-DELAGUA Water Testing Kit — Users Manual
39
12.
Insert the plastic connector of the
vacuum pump into the vacuum
connection on the filtration base.
Squeeze the pump bulb several times
to draw a vacuum, then squeeze as
required to draw all the water through
the membrane filter.
When all the water has passed
through the filter, disconnect the
pump from the filtration apparatus.
Do not allow excess air to be drawn
down through the filter once all the
water has gone through.
13. Unscrew the collar and remove the
funnel and collar with one hand.
Using the sterilised tweezers in the
other hand, lift the membrane
carefully from the filtration base.
Hold the membrane by the edge only.
Attach the vacuum pump and create a
vacuum to draw the sample through the
membrane
Remove the membrane from the filter
head