SKC 226-119 User Manual

Certifi cate of Quality
Cat. Nos. 226-119 and 226-119-7
Sorbent: Silica Gel coated with 2,4-Dinitrophenylhydrazine
Tube Holder: Type B
Storage: Store at ≤ 39.2 F (4 C) before use. After sampling, store at 39.2 F (4 C). Expedite shipping of samples to the laboratory. Friday shipments are not recommended.
SKC is an ISO 9001 registered
manufacturing company.
For compliance sampling, use these tubes as specifi ed in a validated sampling method. It is the user’s responsibility, employing a suitable method, to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before use. The user should adjust the sampling procedures to specifi c conditions and should test tubes to ensure that the desired results will be obtained.
The SKC Certifi cate of Quality assures that these sorbent tubes have been manufactured to meet or exceed the requirements for sorbent purity, sample collection and retention, storage stability, and desorption effi ciency for the following chemical hazards and analytical methods published by NIOSH, OSHA, EPA, or ASTM:
Acetone ASTM D5197 Aldehydes ASTM D5197 Aldehydes EPA TO-11A Formaldehyde ASTM D5197 Formaldehyde EPA IP-6A Formaldehyde EPA TO-11A Formaldehyde NIOSH 2016 Glutaraldehyde NIOSH 2532 Hexanaldehyde (hexanal) ASTM D5197
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.
Form 37575 Rev 1305
Operating Instructions
Tel: 724-941-9701 Fax: 724-941-1369 e-mail: skctech@skcinc.com
863 Valley View Road, Eighty Four, PA 15330 USA
Sorbent Sample Tubes
Cat. Nos. 226-119 and 226-119-7
Description
Sorbent sample tubes Cat. Nos. 226-119 and 226-119-7 are two-section tubes containing 300 and 150 mg of DNPH-coated silica gel, respectively. The second section acts as a backup section to detect sample breakthrough.
Sampling
Select Cat. No. 226-119 for fl ows up to 500 ml/min or Cat. No. 226-119-7 for fl ows up to 1 L/min. For additional sampling parameters, consult the method used. Sampling parameters may vary with ambient concentrations of the analyte.
These sorbent tubes are not recommended for the collection of acrolein due to numerous problems reported with the instability of the acrolein-DNPH derivative during collection and storage.
Sampling Notes
Ozone: Ozone interference is associated with DNPH-coated adsorbent tubes. Sorbent sample tube Cat. No. 226-120 contains the same sorbent as the 226-119/ 119-7 tubes but also includes a built-in ozone scrubber for use in atmospheres where ozone is present. The 226-120 tube may be operated at fl ows up to 1 L/min.
Acetonitrile: The sorbent inside these tubes contains a small amount of residual acetonitrile used in processing the sorbent. Acetonitrile may off-gas during sampling; therefore, exposure monitoring for acetonitrile should not be performed concurrently when these sorbent tubes are in use.
Background
See Certifi cates of Analysis by browsing www.skcinc.com/certifi cates.asp and scrolling to Silica Gel, DNPH Treated, High Purity. Select the Lot number that matches the Lot number printed on the tube.
Preparing Formaldehyde Samples for Analysis
1. Place each sorbent section into separate glass vials.
2. Add 3 ml of acetonitrile to each vial. Cap each vial.
3. Shake each vial periodically over a 30-minute period.
4. Analyze sample extracts by HPLC with UV detection at 365 nm.
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