Description

Gastec P-91-H-5 Permeation Tube Formaldehyde

Gastec P-91-H-5 (also cataloged as P91H5) is a certified, high-emission Formaldehyde (HCHO) permeation tube designed as a primary trace-gas generation standard for producing known, continuous concentrations of formaldehyde vapor.

Positioned in Gastec’s high-output permeation product line, the H-5 designation specifies a elevated nanogram-per-minute (ng/min) release rate. This makes it ideal for calibrating mid-to-high range gas analyzers, verifying indoor air quality (IAQ) sensors, and auditing colorimetric detector tubes without requiring excessive carrier gas dilution rates.