The Gastec 152TP Methyl Ethyl Ketone Detector Tubes are designed for quantitative measurement of methyl ethyl ketone (MEK / CH3COC2H5) in air using a compatible automatic air sampling pump.

The 152TP provides a measuring range of 20 to 300 ppm, with a detection limit of 5 ppm under the specified sampling conditions. The detector tube produces a yellow-to-red color change for visual determination of methyl ethyl ketone concentration.

Each box contains 10 detector tubes for 10 individual tests.

Automatic Air Sampling Pump Required

IMPORTANT: Gastec 152TP Methyl Ethyl Ketone Detector Tubes require a compatible automatic air sampling pump capable of maintaining a continuous 100 mL/min sampling rate.

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

The Gastec 152TP is an automatic air sampling pump detector tube and should not be treated as a standard hand-pump detector tube.

Accurate measurement requires drawing 1,000 mL of air through the detector tube at 100 mL/min for 10 minutes.

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
20–300 ppm	100 mL/min	1,000 mL	1	10 Minutes

The Gastec 152TP requires continuous sampling at 100 mL/min for 10 minutes, producing a total sample volume of 1,000 mL.

The correction factor is 1 under the specified sampling conditions. Temperature and atmospheric-pressure corrections should be applied when required.

Product Specifications

Brand: Gastec
Tube Type: Methyl Ethyl Ketone Detector Tube for Automatic Air Sampling Pump
Part Number: 152TP
Gas/Vapor Measured: Methyl Ethyl Ketone (MEK)
Chemical Formula: CH3COC2H5
Measurement Range: 20–300 ppm
Detection Limit: 5 ppm at 1,000 mL (minimum detectable concentration; not part of the quantitative measuring range)
Sampling Rate: 100 mL/min
Sample Volume: 1,000 mL
Correction Factor: 1
Sampling Time: 10 Minutes
Color Change: Yellow → Red
Operating Temperature: 0–40°C (32–104°F), temperature correction required
Operating Humidity: 0–90% RH, humidity correction not required
Relative Standard Deviation: 10% for 20–100 ppm; 5% for 100–300 ppm
Quantity: 10 Tubes
Tests per Box: 10 Tests
Shelf Life: 24 Months, refrigerated
Pump Requirement: Gastec GSP-501FT or Compatible Automatic Air Sampling Pump

Methyl Ethyl Ketone (MEK) Measurement

The Gastec 152TP provides quantitative measurement of methyl ethyl ketone concentrations from 20 to 300 ppm.

Methyl ethyl ketone is also commonly referred to as MEK or 2-butanone, making these detector tubes useful for facilities and applications where any of these names are used.

The 5 ppm detection limit represents the minimum concentration capable of producing a detectable reaction under the specified 1,000 mL sampling conditions. It is not part of the quantitative measuring range and should not be interpreted as a 5–300 ppm measurement range.

During sampling, methyl ethyl ketone reacts with the detector tube reagent, producing a visible yellow-to-red color change.

Common Applications

Gastec 152TP Methyl Ethyl Ketone Detector Tubes may be used for applicable MEK vapor-monitoring applications including:

• Industrial Hygiene & Occupational Exposure Monitoring

• Workplace MEK Monitoring

• Paint, Coating & Solvent Operations

• Adhesive & Chemical Manufacturing

• Printing & Manufacturing Facilities

• Cleaning & Degreasing Operations

• Chemical Processing

• Industrial Process Air Monitoring

• Laboratory & Research Applications

• Leak & Release Investigations

Temperature Correction

The Gastec 152TP is designed for use between 0 and 40°C (32–104°F) and temperature correction is required.

Gastec specifies the following temperature correction factors:

Temperature	Correction Factor
0°C (32°F)	1.55
5°C (41°F)	1.40
10°C (50°F)	1.30
15°C (59°F)	1.15
20°C (68°F)	1.00
25°C (77°F)	0.90
30°C (86°F)	0.75
35°C (95°F)	0.65
40°C (104°F)	0.55

Multiply the detector tube reading by the appropriate temperature correction factor according to Gastec's instructions.

No humidity correction is required within the specified 0–90% RH range.

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

Possible Interferences

Certain coexisting substances may affect Gastec 152TP measurements.

Ammonia: No interference and no independent color change.

Aldehydes: May produce a positive interference and independently produce a red color.

Ketones: May produce a positive interference and independently produce a red color.

Acetic Acid: At concentrations of 50 ppm or less, no interference is indicated. Acetic acid may independently produce a purple color at 70 ppm.

Ethyl Acetate: May produce a positive interference, with no independent color change indicated.

Diethyl Ether: At concentrations of 150 ppm or less, no interference and no independent color change.

Trichloroethylene: No interference and no independent color change.

Toluene: No interference and no independent color change.

Hexane: No interference and no independent color change.

Benzene: No interference and no independent color change.

Methanol: At concentrations of 150 ppm or less, no interference and no independent color change.

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

Storage

The Gastec 152TP has a manufacturer-specified 24-month shelf life when stored in the refrigerator.

Always follow the storage instructions and expiration information printed on the detector tube box.

Important

A Gastec GSP-501FT or compatible automatic air sampling pump is required for correct use of the Gastec 152TP Methyl Ethyl Ketone Detector Tubes.

Purchase the Correct Automatic Sampling Pump:
Gastec GSP-501FT Automatic Air Sampling Pump

Sampling is performed at 100 mL/min for 10 minutes, producing a total sample volume of 1,000 mL.

Each detector tube provides one test. One box contains 10 tubes for 10 complete tests.

Do not use a standard manual Gastec 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.

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

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