Gastec Formaldehyde Dosimeter Tubes | 91D are designed for time-weighted average (TWA) measurement of formaldehyde and several related vapors over sampling periods ranging from 1 to 10 hours.
These dosimeter tubes provide a convenient method for extended exposure monitoring in workplace and industrial environments where formaldehyde and other vapor concentrations need to be evaluated over a defined period.
Measurement Ranges
| Gas or Vapor | Sampling Time | Detection Range |
|---|---|---|
| Formaldehyde | 1–10 Hours | 0.1–20 ppm |
| Acetaldehyde | 1–10 Hours | 0.1–20 ppm |
| Furfural | 1–10 Hours | 0.3–60 ppm |
| Methyl Ethyl Ketone | 1–10 Hours | 0.125–25 ppm |
Product Specifications
Brand: Gastec
Product: Formaldehyde Dosimeter Tubes
Part Number: 91D
Primary Vapor: Formaldehyde
Primary Detection Range: 0.1–20 ppm
Sampling Period: 1–10 Hours
Measurement Type: Time-Weighted Average (TWA)
Product Type: Dosimeter Detector Tube
TWA Exposure Monitoring
Gastec Dosimeter Tubes are designed for extended-duration vapor measurements rather than a single short-term sample. The 91D tube can be used over a 1 to 10 hour sampling period for monitoring formaldehyde, acetaldehyde, furfural, and methyl ethyl ketone within their respective detection ranges.
Important
Detection ranges vary depending on the specific vapor being measured. Always follow Gastec's instructions for the target substance, sampling duration, tube placement, measurement procedure, and interpretation of results.
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