GASTEC Phosphine (PH3) Detector Tubes – Multiple Measurement Ranges

GASTEC Phosphine (PH3) Detector Tubes

GASTEC Phosphine Detector Tubes provide a convenient, direct-reading method for measuring phosphine (PH3) concentrations in air and gas samples. Designed for use with a compatible GASTEC gas sampling pump, these colorimetric detector tubes allow professionals to perform rapid on-site phosphine measurements across a wide range of concentrations.

With available measurement ranges extending from 0.05–9.8 ppm to 200–5,500 ppm, GASTEC offers multiple PH3 detector tube options for applications ranging from low-level industrial hygiene and workplace monitoring to higher-concentration process and field measurements.

Choose the Phosphine Detector Tube for Your Application

GASTEC offers multiple Phosphine Detector Tubes designed for different PH3 concentration ranges. Select the appropriate GASTEC product number based on the anticipated phosphine concentration and the requirements of your sampling application.

GASTEC Product Number	Phosphine Measurement Range
7H	200–5,500 ppm
7J	2.5–1,000 ppm
7	2.5–100 ppm
7L	0.15–5 ppm
7LA	0.05–9.8 ppm

 

Direct-Reading Colorimetric PH3 Measurement

GASTEC detector tubes use chemical detection reagents that react with the target gas as a measured volume of sample is drawn through the tube. The resulting color-change layer provides a visual indication of phosphine concentration. The measurement can then be determined using the calibrated scale on the detector tube along with the sampling and correction instructions specified for the selected GASTEC product number.

This direct-reading approach provides a practical solution for spot measurements, industrial hygiene surveys, fumigation-related testing, workplace monitoring, process checks, environmental investigations, and other applications where phosphine concentrations need to be evaluated directly at the sampling location.

Phosphine Detector Tubes for Low to High Concentrations

The selection of GASTEC Phosphine Tubes allows users to choose a measurement range that more closely matches anticipated conditions. For low-level PH3 measurements, the GASTEC 7LA (0.05–9.8 ppm) and 7L (0.15–5 ppm) provide sensitive measurement ranges for applications where relatively low concentrations are expected.

For broader ppm measurements, the GASTEC No. 7 (2.5–100 ppm) provides a general-purpose intermediate range, while the 7J (2.5–1,000 ppm) extends measurement capabilities to substantially higher concentrations. For high-concentration applications, the GASTEC 7H (200–5,500 ppm) provides the highest measurement range in this product selection.

Key Features

• Designed specifically for phosphine (PH3) measurement
• Five GASTEC product and measurement range options available
• Available measurement ranges from 0.05–9.8 ppm through 200–5,500 ppm
• Options for low, medium, and high phosphine concentrations
• Direct-reading colorimetric gas detection method
• Calibrated detector tube scale for determining PH3 concentration
• Designed for rapid on-site measurements and field screening
• No electronic sensor or electrical power required at the detector tube
• Compact and portable solution for professional gas measurement
• Designed for use with a compatible GASTEC gas sampling pump

Common Applications

• Phosphine concentration measurement
• Industrial hygiene investigations
• Workplace air monitoring
• Fumigation-related monitoring
• Grain storage and handling facilities
• Agricultural storage facilities
• Industrial process monitoring
• Chemical processing operations
• Environmental field testing
• Maintenance and troubleshooting
• Occupational exposure investigations
• Field screening for PH3

Important Range Selection Information

Phosphine concentrations can vary substantially between applications, making proper detector tube selection important. Individual GASTEC product numbers may have different sample volumes, pump strokes, sampling times, temperature requirements, correction factors, and potential interfering gases. Always follow the instructions supplied with the specific GASTEC Phosphine Detector Tube being used.

GASTEC Detector Tubes for Professional Phosphine Measurement

Activated Carbon Depot supplies GASTEC detector tubes and compatible gas sampling equipment for industrial hygienists, safety professionals, environmental consultants, agricultural and storage operations, laboratories, maintenance teams, and industrial facilities. With five Phosphine Detector Tube options covering low-level measurements through high-concentration PH3 applications, users can select the GASTEC product number and measurement range best suited to their testing requirements.