SKC 226-120 Sorbent Sample Tube Təlimat kitabçası

SKC 226-120 Sorbent Sample Tube Təlimat kitabçası

Təsvir
Sorbent sample tube Cat. No. 226-120 is a three-section tube containing 300 and 150 mg of DNPH-coated silica gel, respectively (sample section and backup section to detect breakthrough), and a 1500 mg section of potassium iodide that acts as an ozone scrubber.

Store at ≤ 39.2 F (4 C). Limited shelf-life; check expiration date on packaging.

Sampling
The 226-120 sorbent sample tube can be used at flow rates up to 1 L/min. For additional sampling parameters, consult the method used. Sampling parameters may vary with ambient concentrations of the analyte.

This sorbent tube is 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 Qeydlər
Ozone: Ozone interference is associated with DNPH-coated adsorbent tubes. Sorbent sample tube Cat. No. 226-120 contains a built-in ozone scrubber that may be used in atmospheres where ozone is present to help eliminate this interference.

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.

Fon
See Certificates of Analysis at www.skcinc.com/knowledgecenter: search on Silica Gel, DNPH Treated, High Purity and select the Lot Number that matches the Lot Number printed on the tube.

Analysis of Formaldehyde Samples

Place each sorbent section into separate glass vials. Discard the ozone scrubber section according to state and federal guidelines.

Add 3 ml of acetonitrile to each vial. Cap each vial.
Shake each vial periodically over a 30-minute period.

s təhlil edinample extracts by HPLC with UV detection at 365 nm.

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SKC məhsulları SKC-nin yeganə məsuliyyətini və alıcının müstəsna hüququnu təmin edən SKC Məhdud Zəmanət və Qaytarma Siyasətinə tabedir. Kimə view tam SKC Məhdud Zəmanət və Qaytarma Siyasəti ilə əlaqə saxlayın skcinc.com/warranty.

Forma 37356 Rev 240917

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