GASTEC Detector Tube & Pump System
Experience precision gas measurement with GASTEC trusted manual sampling pumps and over 500 compatible detector tubes. Reliable, portable, and built for the toughest field environments.
Overview
GASTEC Detector Tubes provide direct concentration readings using a calibrated scale printed on each tube. At GASTEC, we are committed to delivering the highest quality detector tubes for accurate analysis of gases and vapours in air, as well as pollutants in soil and water, backed by advanced, state-of-the-art research and development. Our dedication to quality and innovation has earned us a strong reputation across a wide range of industries, commercial sectors, and services. Today, our detector tubes support over 500 different applications.
What is the GASTEC Detector Tube System?
The GASTEC system is a direct-reading, colorimetric gas detector tube method designed for accurate measurement of airborne gases and vapors. By simply drawing air through a glass detector tube, users can instantly read concentration levels on a pre-calibrated scale — no additional equipment required.
High-Quality Glass Tube
Every tube is made from durable, high-quality glass to ensure accuracy and reliability in testing.
Calibration Scale
Scales are printed for clear readability (in ppm, mg/m³, mg/L, or %) against the color change layer. Each scale is lot-tested and qualified for precision.
Standard Number of Pump Strokes
Indicates the required number of strokes needed to collect the standard air sample volume for this tube.
Quality Control Number (QC No.)
Every production lot is assigned a QC number for traceability. Tubes with the same QC No. are regularly checked to maintain standards.
Distinct Layer of Color Change
Provides a clear, visual indication of gas presence, making results quick and easy to interpret.
Reliable Detecting Reagents
Formulated to meet strict quality standards, ensuring accurate demarcation, clarity, and brightness of color change layers.
Chemical Formula
Displays the chemical formula of the measured substance. Abbreviations are used for lengthy formulas.
Detector Tube Number
Each number indicates the type of substance measurable, while the accompanying letter (H, M, L) shows high, medium, or low concentration detection levels.
Portable & Convenient
From common industrial gases to specialized chemicals
Quick Results
Instant on-site readings in minutes.
Extensive Coverage
Over 500 gases detectable.
Trusted Worldwide
Used across industries for safety, research, and compliance.
Gas Sampling Pump Features
The built-in tip breaker incorporates a diamond edge for maximum durability that cuts the surface of the detector tube. This makes the tip breaking much easier, safer and convenient. Discarded tips are deposited in a storage bin for safe and easy disposal.
The GASTEC GV-110 and GV-100 pumps feature a smaller-diameter piston for easier operation with minimal effort. Both models meet the EN1231 leakage standard, ensuring leakage stays below 3 mL/min in the first minute of a pump stroke. A red line on the pump shaft clearly indicates leakage rates for quick visual confirmation.
The pump body is coated with a soft elastomer and designed with a narrower middle section for a secure grip. All external parts are made from non-sparking ABS resin, except for the tube tip cutter opening, which is constructed from chrome-plated stainless steel.
The pump shaft features clear red markings for both full-stroke (100 mL) and half-stroke (50 mL) positions, with the handle locking precisely in place. A built-in flow finish indicator automatically signals when sampling is complete—when the white disk pops out, the stroke is finished.
The automatic stroke counter built in model GV-110 (in Model GV-110S) gas sampling pump can track up to ten pump strokes automatically so there is no chance of miscounting.
Three Simple Steps to Accurate Gas Detection
Break off both ends of the detector tube. Insert the tube into the rubber inlet.
Pull out the handle until it is locked. Wait until the sampling time has elapsed.
Read the measurement at the end of the coloured layer.
Airtightness Check
Before you begin sampling, it’s crucial to verify that your sampling pump is airtight—any leaks can compromise measurement accuracy. Here’s a simple check to ensure reliability:
First, confirm that the inlet nut is not loose.
Insert a detector tube (with both tips intact) into the rubber tube inlet of the sampling pump.
With the handle fully pushed in, align both of the guide marks (red line + triangle) on the pump (tail-end block) and the handle (▲100).
Pull out the handle in one thrust until it is locked, and then release the handle. Wait until the sampling time (approx. 1 minute) has elapsed.
Grasp the handle and turn it 90 degrees. If the pump is completely airtight, the handle should readily return to its original position; with the handle's demarcation read line fully concealed.
