Hydrogen Sulfide Gas Detection Tubes

Gastec Corporation - Monitoring

Overview

Colorimetric gas detection tubes for measuring hydrogen sulfide (H2S) concentration in confined spaces, including open septic tanks. H2S is produced by anaerobic bacterial activity in septic systems and is lethal at concentrations above 100 ppm. Gastec detector tubes provide a simple, inexpensive, no-battery method to check H2S levels before entering or leaning over an open septic tank. Required safety equipment for any technician who opens septic tank access covers.

Pricing

$35 - $55 USD

Specifications

Detection Range	1 to 200 ppm (H2S 4LT tube)
Method	colorimetric length-of-stain
Required Pump	Gastec GV-100 or compatible
Tubes Per Box	10
Response Time	2 pump strokes (approximately 30 seconds)
Shelf Life	as printed on box, typically 2 years

Features

✓Quick H2S detection before opening or approaching open tank
✓No battery or calibration required for colorimetric tubes
✓Provides quantitative concentration reading for documentation
✓Inexpensive per-test cost for routine safety checks
✓Required safety practice before confined space entry near septic systems

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