ATS DWS-8C, Руководство по установке и эксплуатации

Страница: 18 / 23

18
SUGGESTED PROCEDURE FOR OBTAINING STERILE WATER SAMPLES:
Prior to taking the water sample, be sure to have on hand an adequate supply of sterile bottles. These
sterile bottles should be obtained from a reputable laboratory and should have been autoclaved and
contained within a plastic outer wrapping.
1. Prior to taking the sample, it is imperative that the sample cock, faucets, etc. be opened
at full force for a complete three and one half minutes.
2. After the valve has been left wide open for three and one half minutes, reduce the flow
to a reasonable stream of water. Flow to drain an additional three minutes.
3. Open the sterile bottle or sterile container being used. Holding the cap in a down
position, the operator should then hold his breath while taking the sample so as to
avoid oral contamination of the sample. The operator must not allow his finger to
touch the inside of the cap or the neck of the bottle.
4. After the sample has been taken, the cap should immediately be tightly placed on the
sample container.
5. The sample container should be placed in a plastic wrapping and should be taken to
the laboratory for plating as soon as possible following the above procedure.
We recommend duplicate samples be taken at each test station during each specific test so as to avoid
loss of sample through laboratory error and to insure reasonable validity through comparison.
Check with your local laboratory to assure proper sampling and submittal procedure.