The Gastec 132P Trichloroethylene Detector Tubes are designed for sensitive, low-level measurement of trichloroethylene (Cl2C) in air using a compatible automatic air sampling pump.

The 132P provides a quantitative measuring range of 20 to 1,200 µg/m³, with a detection limit of 5 µg/m³ under the specified sampling conditions. The detector system produces a yellow-to-purple color change for visual determination of trichloroethylene concentration.

IMPORTANT: The Gastec 132P uses two connected tubes for each measurement. Each box contains 10 tubes for a total of 5 tests.

Automatic Air Sampling Pump Required

IMPORTANT: Gastec 132P Trichloroethylene Detector Tubes require a compatible automatic air sampling pump capable of maintaining a continuous 100 mL/min sampling rate.

Automatic Sampling Pump:
Gastec GSP-501FT Automatic Air Sampling Pump

The 132P is an automatic air sampling pump detector tube and should not be treated as a standard hand-pump detector tube.

For the primary measuring range, sampling is performed at 100 mL/min for 30 minutes. For concentrations above 500 µg/m³, a fresh tube set is sampled at 100 mL/min for 15 minutes and the reading is multiplied by the specified 2.4 correction factor.

Do not substitute a standard manual Gastec detector tube pump for the required automatic sampling method.

Measurement & Sampling Specifications

Measurement Range	Sampling Rate	Sample Volume	Correction Factor	Sampling Time
20–500 µg/m³	100 mL/min	3,000 mL	1	30 Minutes
500–1,200 µg/m³	100 mL/min	1,500 mL	2.4	15 Minutes

For measurements from 20 to 500 µg/m³, sample at 100 mL/min for 30 minutes, providing a total sample volume of 3,000 mL.

For measurements above 500 µg/m³ and up to 1,200 µg/m³, prepare a fresh tube set and sample at 100 mL/min for 15 minutes, providing a total sample volume of 1,500 mL. Multiply the detector tube reading by the specified 2.4 correction factor.

Product Specifications

Brand: Gastec
Tube Type: Trichloroethylene Detector Tube for Automatic Air Sampling Pump
Part Number: 132P
Gas/Vapor Measured: Trichloroethylene
Chemical Formula: Cl2C
Measurement Range: 20–1,200 µg/m³
Primary Measurement Range: 20–500 µg/m³
Extended Measurement Range: 500–1,200 µg/m³
Detection Limit: 5 µg/m³ at 3,000 mL (minimum detectable concentration; not part of the quantitative measuring range)
Sampling Rate: 100 mL/min
Primary Sample Volume: 3,000 mL
Extended Sample Volume: 1,500 mL
Correction Factor: 1 or 2.4 depending on measurement range
Primary Sampling Time: 30 Minutes
Extended Sampling Time: 15 Minutes
Color Change: Yellow → Purple
Operating Temperature: 5–40°C (41–104°F), temperature correction required
Operating Humidity: 20–80% RH, humidity correction not required
Relative Standard Deviation: 10% for 20–100 µg/m³; 5% for 100–500 µg/m³
Quantity: 10 Tubes
Tests per Box: 5 Tests
Shelf Life: 24 Months
Pump Requirement: Compatible Automatic Air Sampling Pump Required

Two-Tube Measurement System

The Gastec 132P requires two tubes to be connected together during each measurement.

Prepare and connect the tubes according to Gastec's official instructions before attaching the assembled detector tube system to the automatic air sampling pump.

Because two tubes are consumed during each measurement, one box containing 10 tubes provides 5 complete tests.

Always follow the official Gastec 132P instruction manual for proper tube preparation, connection, orientation, and sampling procedure.

Low-Level Trichloroethylene Measurement

The Gastec 132P is designed for sensitive measurement of trichloroethylene in the µg/m³ concentration range and is categorized by Gastec for sampling hazardous air pollutants.

Its total quantitative measuring range extends from 20 to 1,200 µg/m³ using two sampling procedures.

The 5 µg/m³ detection limit represents the minimum concentration capable of producing a detectable reaction under the specified 3,000 mL sampling conditions. It is not part of the quantitative measuring range and should not be interpreted as a 5–1,200 µg/m³ measurement range.

During sampling, the detecting layer changes from yellow to purple.

Common Applications

Gastec 132P Trichloroethylene Detector Tubes may be used for applicable low-level trichloroethylene monitoring applications including:

• Hazardous Air Pollutant Sampling

• Environmental Air Monitoring

• Low-Level Trichloroethylene Monitoring

• Industrial Hygiene Investigations

• Chemical Manufacturing & Processing

• Degreasing & Solvent Operations

• Industrial Emission Investigations

• Environmental Atmospheric Monitoring

• Laboratory & Research Applications

• Leak & Release Investigations

Temperature Correction

The Gastec 132P is designed for use between 5 and 40°C (41–104°F) and temperature correction is required.

Use the temperature-correction information provided in the official Gastec 132P instruction manual when determining the final trichloroethylene concentration.

The specified relative humidity range is 20–80% RH, and humidity correction is not required within this range.

Atmospheric-pressure correction may also be required according to Gastec's official measurement procedure.

Possible Interferences

Certain coexisting substances may affect Gastec 132P measurements.

Vinyl Chloride: May produce a positive interference and independently produce a purple color.

1,2-Dichloroethylene: May produce a positive interference and independently produce a purple color.

Tetrachloroethylene: May produce a positive interference and independently produce a purple color.

Gastec identifies the following substances as producing no interference and no independent color change under the manufacturer's stated test conditions:

• Hydrogen Chloride

• Chlorine

• 1,1,1-Trichloroethane

• Toluene

• Xylene

Coexisting gases and vapors should always be considered when interpreting detector tube measurements.

Outdoor Measurement — Important

When performing an outdoor measurement, keep the Gastec 132P detector tubes out of direct sunlight during sampling.

Gastec specifically includes this precaution in the 132P manufacturer specifications.

Important

A compatible automatic air sampling pump is required for correct use of the Gastec 132P Trichloroethylene Detector Tubes.

Purchase an Automatic Sampling Pump:
Gastec GSP-501FT Automatic Air Sampling Pump

For the primary 20–500 µg/m³ range, sampling is performed at 100 mL/min for 30 minutes, producing a total sample volume of 3,000 mL.

For the extended 500–1,200 µg/m³ range, prepare a fresh tube set and sample at 100 mL/min for 15 minutes, producing a total sample volume of 1,500 mL. Multiply the detector tube reading by the 2.4 correction factor.

Two detector tubes must be connected for each measurement. Therefore, 10 tubes provide 5 complete tests.

Do not use a standard manual detector tube pump in place of the required automatic sampling method.

Temperature and atmospheric-pressure corrections should be applied when required according to Gastec's official instructions.

For outdoor measurements, keep the detector tubes out of direct sunlight during sampling.

Always follow Gastec's official instructions for tube preparation and connection, sampling rate, sample volume, sampling time, correction factors, environmental corrections, possible interferences, and interpretation of results.

Choose Instrument Depot for dependable Gastec 132P Trichloroethylene Detector Tubes, Cl2C detector tubes, trichloroethylene air testing, TCE air monitoring, hazardous air pollutant sampling, environmental air monitoring, Gastec automatic air sampling pumps, industrial hygiene air monitoring, gas detector tubes, and industrial gas detection equipment.