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6712SR Refrigerated Sampler
Section 8 Maintenance
8-3
protocols are based on U.S. Environmental Protection Agency
Publications EPA-600/4-77-039 (Sampling of Water and Waste-
water by Dr. Phillip E. Shelley).
8.3.1 Teledyne Isco Glass
Sample Bottles
1. One spectro-grade acetone rinse.
2. Dishwasher cycle (wash and tap water rinse, no detergent).
3. Acid wash with at least 20 percent hydrochloric acid.
4. Dishwasher cycle (wash and tap water rinse, no detergent).
5. Replace in covered Teledyne Isco tubs.
8.3.2 Vinyl Suction Line • Use new suction line for each new sampling setup,
therefore, no cleaning is required.
• Use Teflon suction line when sampling for organic
compounds.
8.3.3 Teflon Suction Line 1. Rinse twice with spectro-grade acetone.
2. Rinse thoroughly with hot tap water using a brush, if pos-
sible, to remove particulate matter and surface film.
3. Rinse thoroughly three times with tap water.
4. Acid wash with at least 20 percent hydrochloric acid.
5. Rinse thoroughly three times with tap water.
6. Rinse thoroughly three times with distilled water.
7. Rinse thoroughly with petroleum ether and dry by pulling
air through the line.
8. Dry overnight in a warm oven (use an oven temperature of
lower than 150° F), if possible.
9. Cap ends with aluminum foil.
8.3.4 Teledyne Isco Pump
Tube
1. Rinse by pumping hot tap water through the tube for at
least 2 minutes.
2. Acid wash the tube by pumping at least a 20 percent solu-
tion of hydrochloric acid through the tube for at least 2
minutes.
3. Rinse by pumping hot tap water through the tube for at
least 2 minutes.
4. Rinse by pumping distilled water through the tube for at
least 2 minutes.
Note
For critical sampling applications, consider replacing the suc-
tion line, pump tube, and discharge tube. Replacement elimi-
nates the possibility of any cross contamination from previous
sampling sites.