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Nextteq™ Gastec™ Dosimeter Tubes
SDP

Catalog No. 19026357 Shop All Nextteq Products
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Components Measured:
Acetaldehyde, Formaldehyde, Furfural, Methyl Ethyl Ketone
Ammonia, Dimethylamine, N,N-Diethylmethylamine, Hydrazine, Triethylamine
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Catalog No. Components Measured
19-026-357 Acetaldehyde, Formaldehyde, Furfural, Methyl Ethyl Ketone
19-026-275 Ammonia, Dimethylamine, N,N-Diethylmethylamine, Hydrazine, Triethylamine
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Catalog No. 19-026-357 Supplier Nextteq™ Supplier No. 91D
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Description

Designed for long-term, time-weighted measurement of formaldehyde concentration in ambient air.

Gastec™ No. 91D formaldehyde dosimeter tubes are designed for long-term, time-weighted average (TWA) measurement of formaldehyde concentrations.

  • Measuring Range: 0.1 to 20 ppm
  • Sampling Time: 1 to 10 hours
  • Detection Limit: 0.05 ppm
  • Reaction Principle: 3HCHO + (NH2OH)3H3PO4 → H3PO4 + base
  • Color Change: Yellow to Reddish Brown
  • Relative Standard Deviation: 10%
  • Operating Conditions: 0°C to 40°C (32°F to 104°F) and 0% to 90% relative humidity
  • Other Measurable Substances: Acetaldehyde, furfural, and methyl ethyl ketone

Specifications

Components Measured Acetaldehyde, Formaldehyde, Furfural, Methyl Ethyl Ketone
Type Passive Sampling Tube
Measurement Range Acetaldehyde: 0.1-20ppm, Formaldehyde: 0.10-20ppm, Furfural: 0.3-60ppm, Methyl Ethyl Ketone: 0.125-25ppm
Quantity 10
Response Time Acetaldehyde: 1-10 hr., Formaldehyde: 1-10 hr., Furfural: 1-10 hr., Methyl Ethyl Ketone: 1-10 hr.
Temperature Range (English) 32°F to 104°F
Temperature Range (Metric) 0°C to 40°C
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