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424 1-800-356-1688 or 1-814-353-1300
SAMPLE HANDLING | AIR SAMPLING
Canister Valves & Gauges
Ashcroft® Test Gauges
• Accurate measurement of vacuum to –30" Hg and pressure to 60 psi.
• Available in both analog and digital formats.
• Accuracy to +/– 0.25%.
• Gauge connector to canister valve available.
High-accuracy test gauges are recommended for verifying the vacuum/pressure in
canisters before and after sampling. The 6-inch face on the analog gauge allows for easy
reading. The digital gauge operates on two AAA batteries and offers an unambiguous
readout. Both gauges have an accuracy of +/– 0.25% and all-metal wetted parts.
24285
24268
Choose the Appropriate Device for Your Sampling Needs
See for canisters. See for gas sampling bags.
See for canister and thermal desorption tube comparison.
Media Type whole air whole air adsorption
Sensitivity ppb ppm ppm
Technique passive (no pump) active active
Sample Type grab or integrated grab integrated
Analyte wide range of VOCs wide range of VOCs sorbent-specific
& permanent gases
Applications ambient, IAQ, ambient, IAQ IAQ, IH
emergency response, IH emission
Durability reusable one-time use one-time use
Inertness excellent fair fair
Stability 30 day 48 hours varies by analyte
Sample Volume 0.4–6 L 0.5–100 L varies by analyte
Sampling Time minutes to days minutes to hours minutes to hours
Canister
Gas
Sampling Bag
Thermal Desorption
Unit (TDU) Tube
Description qty. cat.# price
Analog Test Gauge, 6" diameter,1/4 " NPT ea. 24285
Digital Test Gauge, 3" diameter,1/4" NPT ea. 24268
Ashcroft Gauge Connector to Canister Valve, stainless steel,
connects1/4" male NPT to1/ 4" male compression fitting ea. 22121