Owner's manual

Preloaded Coated Filters
Cat. No. 225-9019
SKC coated lters are shipped preloaded in casse es with end plugs and shrink
bands in place. No assembly is required; they are ready to use.
Method & Chemical: OSHA 81 for crotonaldehyde
Filter & Coating: 2 glass ber lters treated with 2,4-dinitrophenylhydrazine and
phosphoric acid. Three-piece 37-mm casse e. Open-face sampling con guration
Prior to Sampling: Store at 39.2 F (4 C) for up to 3 months.
Sample Stability: Store samples in the dark at -4 F (-20 C). Freezer storage
and shipping required
For information on other available
coated lters, request SKC Publication 1219.
Operating Instructions
863 Valley View Road, Eighty Four, PA 15330
Tel: 724-941-9701 Fax: 724-941-1369
www.skcinc.com
SKC Limited Warranty and Return Policy
SKC products are subject to the SKC Limited Warranty and Return Policy, which
provides SKC's sole liability and the buyer's exclusive remedy. To view the complete
SKC Limited Warranty and Return Policy, go to http://www.skcinc.com/warranty.asp.
How to Use SKC Preloaded Coated Filters
1. Select one coated lter casse e for calibrating the 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 lter
casse e in line. For “closed-face” sampling, remove the plugs and connect the
casse e to the sampling train. For “open-face” sampling, remove the outlet
plug and the casse e inlet section then connect the casse e to the sampling
train. For details on se 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 ow rate using a lm 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 casse e used for calibration with a fresh coated lter casse e
for sample collection. A ach the casse e to a workers collar, as close to the
breathing zone as possible, by using a lter casse e holder (SKC Cat. No.
225-1). Sample for the speci ed time interval and record the time.
4. Remove the lter casse e at the end of the speci ed sampling period and
replace both end plugs (and the inlet if necessary). Recheck the ow rate using
the same casse e and owmeter used for calibration in Step 2 to ensure that
the ow rate has not changed by more than 5%.
5. Store samples at -4 F (-20 C). 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 40048 Rev 1303

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