Preloaded Coated Filters
Cat. No. 225-9021
SKC coated fi 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 86 for maleic anhydride
Filter & Coating: 2 glass fi ber fi lters treated with veratrylamine. Three-piece
37-mm casse e. Closed-face sampling confi guration
Prior to Sampling: Store at ≤ 39.2 F (4 C) for up to 3 months.
Sample Stability: Store samples at ≤ 39.2 F (4 C) for up to 15 days.
For information on other available
coated fi 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 fi lter casse 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
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 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 casse e used for calibration with a fresh coated fi lter casse e
for sample collection. A ach the casse e to a worker’s collar, as close to the
breathing zone as possible, by using a fi lter casse e holder (SKC Cat. No.
225-1). Sample for the specifi ed time interval and record the time.
4. Remove the fi lter casse 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 casse 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. Store samples at ≤ 39.2 F (4 C) for up to 15 days. Analyze as soon as possible.
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 40050 Rev 1303
(1 Seiten)
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