Operating Instructions
863 Valley View Road, Eighty Four, PA 15330
Tel: 724-941-9701 Fax: 724-941-1369
www.skcinc.com
Preloaded Coated Filters
Cat. No. 225-9001*
SKC coated fi lters are shipped preloaded in the casse es with end plugs and
shrink bands in place. No assembly is required; they are ready to use.
Method & Chemical: OSHA ID 105 for inorganic arsenic; ASTM D4765,
NIOSH 7902, NIOSH 7906, and OSHA ID 110 for fl uorides. IRSST* Canadian
Patent # 1,299,144
Filter & Coating: Mixed cellulose-ester fi lter with porous plastic support pad
and cellulose support pad coated with aqueous sodium carbonate. Three-piece
37-mm casse e. Closed-face sampling confi guration
Prior to Sampling: Store at 71.6 F (22 C) for up to two years.
Sample Stability: No storage stability data is available.
How to Use the 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. Appropriately package fi lter casse es and ship the samples, blanks, and
all pertinent data to a laboratory for analysis.
For information on other available
coated fi lters, request SKC Publication 1219.
* Concept of sampling fl uorides in air using double fi lter patented in Canada by IRSST,
Institut de recherche Robert-Sauvé en santé et en sécurité du travail du Quebec (Quebec
Occupational Health and Safety Research Institute), 21 APR 92.
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 W arranty and Return Policy, go to http://www.skcinc.com/warranty.asp.
Form 40030 Rev 1303
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