SKC 225-9003 Preloaded Coated Filter User Manual
Operating instructions
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330
Tel: 724-941-9701 Fax: 724-941-1369
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SKC products are subject to the SKC Limited Warranty and Return Policy, which
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How to Use the SKC Preloaded Coated Filters
1. Select one coated fi lter cassett e for calibrating the fl ow rate. A red plug
secures the inlet, which is clearly marked “inlet,” and a blue plug secures the
outlet. Set up the sampling train for calibration with the representative fi lter
cassett e in line. For “closed-face” sampling, remove the plugs and connect the
cassett e to the sampling train. For “open-face” sampling, remove the outlet
plug and the cassett e inlet section then connect the cassett e to the sampling
train. For details on sett ing up a sampling train, refer to the SKC Sample Setup
Guide “Sampling Train - Filters and Cyclones” (SKC Publication 1166).
2. Calibrate the pump to the desired fl ow rate using a fi lm fl owmeter or
calibrated precision rotameter. For details on calibrating a pump, refer to the
SKC Sample Setup Guide “Calibrating a Pump Using a Film Flowmeter” (SKC
Publication 1163).
3. Replace
the
cassett e used for calibration with a fresh coated fi lter cassett e
for sample collection. Att ach the cassett e to a worker’s collar, as close to the
breathing zone as possible, by using a fi lter cassett e holder (SKC Cat. No.
225-1). Sample for the specifi ed time interval and record the time.
4. Remove
the
fi lter cassett e at the end of the specifi ed sampling period and
replace both end plugs (and the inlet if necessary). Recheck the fl ow rate using
the same cassett e and fl owmeter used for calibration (in Step 2) to ensure that
the fl ow rate has not changed by more than 5%.
5. See Sample Stability on reverse side for sample storage. Appropriately package
samples, blanks, and all pertinent data to send to a lab for analysis. Expedite
shipping of samples to laboratory. Friday shipments are not recommended.
Form 40032 Rev 1303
Preloaded Coated Filters
Cat. No. 225-9003
Note: Filters are light yellow and may contain orange speckles. This
is a normal effect of the DNPH coating and does not affect fi lter
performance or sampling results.
SKC coated fi lters are shipped preloaded in the cassett es with end plugs and
shrink bands in place. No assembly is required; they are ready to use.
Method & Chemical: OSHA 64 for glutaraldehyde
Filter & Coating: 2 glass fi ber fi lters coated with 2,4-dinitrophenyl hydra-
zine and phosphoric acid. Four-piece 37-mm cassett e. Open-face sampling
confi guration
Prior to Sampling: Store at ≤ 39.2 F (4 C) for up to one year.
Sample Stability: Store samples in the dark at ≤ 39.2 F (4 C) or 71.6 F (22 C)
for up to 17 days. Refrigerated storage is recommended.
For information on other available
coated fi lters, request SKC Publication 1219.