Sorbent Tubes, 2 Molecular Sieve (Triethanolamine) Tubes and 1 Oxidizer Tube

Sorbent Tubes, 2 Molecular Sieve (Triethanolamine) Tubes and 1 Oxidizer Tube

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Part Number: 226-40A

Sorbent Tubes, 2 Molecular Sieve (Triethanolamine) Tubes and 1 Oxidizer Tube Overview

Sorbent Tube, multiple-tube train

Tube 1: 7 x 70 mm, contains 400 mg Molecular Sieve treated with triethanolamine (TEA), glass sealed tube ends, Glass Wool/Glass Wool separators - collects NO2; Tube 2: 7 x 110 mm, contains 400 mg treated silica gel (oxidizer), glass sealed tube ends, Glass Wool/Glass Wool separators - converts NO to NO2; Tube 3: 7 x 70 mm, contains 600 mg Molecular Sieve treated with triethanolamine (TEA), glass sealed tube ends, Glass Wool/Glass Wool separators - collects NO2; the NO2 ion [nitrite] is determined during analysis and labs use the SKC-supplied formula/graph to calculate NO ppm; replaces 226-40; 10 sets

Storage at  ≤ 39.2 F (4 C) required.

Tube 1: 7 x 70 mm, contains 400 mg Molecular Sieve treated with triethanolamine (TEA), GS, WW - collects NO2

Tube 2: 7 x 110 mm, contains 400 mg treated silica gel (oxidizer), GS, WW - converts NO to NO2

Tube 3: 7 x 70 mm, contains 600 mg Molecular Sieve treated with triethanolamine (TEA), GS, WW - collects NO2

The NO2 ion [nitrite] is determined during analysis and labs use the SKC-supplied formula/graph to calculate NO ppm

10 sets

  • Tube Type : Solvent Extraction
  • Sorbent : Other
  • Sorbent Coating : Yes
  • Number of Sections : 1
  • Tube Material : Glass
  • Meet NIOSH, OSHA, ASTM, EPA, and HSE specifications
    • Your single source for U.S. and UK methods
  • Made with high-quality, low-background sorbents
  • SKC thorough quality control ensures sorbents and tubes meet high standards
    • Accurate sorbent weights
    • Consistent method-specified mesh size and separators
    • Uniform back pressure
    • Accurate, repeatable results
  • Large batch production of Anasorb® CSC Lot 2022 charcoal to ensure availability for many years
  • Validation of reliability
    • Specified in OSHA, NIOSH, ASTM, and EPA methods
    • Used by health and safety professionals around the world for compliance and consulting
  • Sorbent background certification available online (see Certificates of Analysis)
  • Technical support from scientists
  • Hundreds of sorbent tubes for standard and specialty applications delivered quickly from stock



226-01 drawing

TechTips logo

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Consult the method or the SKC Air Sampling Guide to determine the appropriate sorbent tube to use for the chemical being sampled.
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Just before sampling, use a scorer/breaker tool to uniformly break the ends of the sorbent tube to a 2 mm diameter or half the diameter of the tube body.
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Keep the tube in a vertical position during sampling to prevent the possibility of channeling that can lead to undersampling.
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The arrow on the tube indicates air flow direction and should point to the tube holder and pump. If no arrow is present, the smallest section should be near the tube holder.
Red Triangle Ship the sample to a laboratory as soon as possible; avoid excessive heat and rough handling.