Teledyne Refrigerated Sampler 6712FR - Manual (Page 155)

6712FR Refrigerated Sampler
Section 8 Maintenance
8-3
8.3 Cleaning Protocols for
Priority Pollutants
Clean sampling equipment is essential for valid laboratory
analysis. Teledyne Isco recommends that you develop cleaning
protocols in consultation with a laboratory analyst when
designing the monitoring program. For example, to clean sample
bottles, suction line, and pump tubes, Lair (1974) suggests these
protocols used by USEPA Region IV Surveillance and Analysis
field personnel engaged in NPDES compliance monitoring. The
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 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 Isco tubs.
8.3.2 Vinyl Suction Line • Use new suction line for each new sampling setup,
therefore, no cleaning is required.
• Use PTFE suction line when sampling for organic
compounds.
8.3.3 PTFE 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 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.