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3700 Portable Samplers
Section 5 Routine Maintenance
5-2
and techniques are adequate, as well as to avoid including prac-
tices that are not warranted in view of the analysis to be per-
formed.
Cleaning Examples – As an example, Lair (1974) has set down
the standard operating procedures for the cleaning of sample
bottles and field procedures equipment used by USEPA Region
IV Surveillance and Analysis field personnel engaged in NPDES
compliance monitoring. They are reproduced below for a typical
automatic sampler and related sampling equipment.
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% hydrochloric acid.
4. Dishwasher cycle, tap and distilled water rinse cycles, no
detergent.
5. Replace in covered Teledyne Isco bases.
1
3
Suction Line (
/
or
/
Vinyl):
4
8
1. Do not reuse sample tubing. No cleaning required. Use new
sample tubing for each new sampling setup.
2. Use PTFE tubing where samples for organics are to be col-
lected.
Teledyne Isco Pump Tube:
1. Rinse by pumping hot tap water through tubing for at least
2 minutes.
2. Acid wash tubing by pumping at least a 20% solution of
hydrochloric acid through tubing for at least 2 minutes.
3. Rinse by pumping hot tap water through tubing for at least
2 minutes.
4. Rinse by pumping distilled water through tubing for at
least 2 minutes.
PTFE Tubing:
1. Rinse twice with spectro-grade acetone.
2. Rinse thoroughly with hot tap water using a brush if possi-
ble 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
room air through tubing.
8. Dry overnight in warm oven (less than 150
9. Cap ends with aluminum foil.
o
F) if possible.
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