User Manual

Preloaded Coated Filters

Cat. No. 225-9009

SKC coated ﬁ lters are shipped preloaded in the cassettes with end plugs and

shrink bands in place. No assembly is required; they are ready to use.

Method & Chemical: OSHA 82 for acetic anhydride

Filter & Coating: 2 glass ﬁ ber ﬁ lters coated with 1-(2-pyridyl) piperazine.

Four-piece 37-mm cassette. Closed-face sampling conﬁ guration

Prior to Sampling: Store at ≤ 39.2 F (4 C) for up to 6 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 the SKC Preloaded Coated Filters

1. Select one coated ﬁ lter cassette 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

cassette in line. For “closed-face” sampling, remove the plugs and connect the

cassette to the sampling train. For “open-face” sampling, remove the outlet

plug and the cassette inlet section then connect the cassette to the sampling

train. For details on setting 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 cassette used for calibration with a fresh coated ﬁ lter cassette

for sample collection. Attach the cassette to a worker’s collar, as close to the

breathing zone as possible, by using a ﬁ lter cassette holder (SKC Cat. No.

225-1). Sample for the speciﬁ ed time interval and record the time.

4. Remove the ﬁ lter cassette 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 cassette 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. 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 40038 Rev 1303