413
SAMPLE HANDLING |
AIR MONITORING
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 can-
isters before and after sampling. The 6-inch face on the analog gauge allows for easy
reading. The digital gauge operates on 2 AAA batteries and offers an unambiguous
readout. Both gauges have an accuracy of +/- 0.25% and all metal wetted parts.
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, connects
1
/
4
" male NPT
to
1
/
4
" male compression fitting
ea.
22121
24285
24268
Choose the Appropriate Device for Your Sampling Needs
Canister
Gas
Sampling Bag
Solvent
Desorption Tube
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 hrs
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
See pages 408-411 for canisters. See page 423 for gas sampling bags.
See page 425 for canister and thermal desorption tube comparison.
NEW!
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
