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SAMPLE HANDLING | AIR SAMPLING
Passive Air Sampling Kits
Passive Air Sampling Kits—Integrated (Stainless Steel & Siltek®-Treated)
Superior Performance—an Excellent Restek® Value
• Provide accurate integrated sampling without a sampling pump.
• Siltek®-treated components ensure accurate sampling of active components.
• Excellent for sampling times from 0.5 hour to 125 hours.
Restek’s passive air sampling kit incorporates all the hardware necessary to collect air
samples and is easy to assemble for field sampling.* The improved filter design greatly
reduces the number of potential leak sites.
The passive air sampling kit is available in seven sampling flow ranges and in stainless
steel or Siltek®-treated finish. The stainless steel kit is ideal to partner with the Restek®
TO-Can® air sampling canister for TO-14A and TO-15 methods. Use the Siltek®-
treated version with the Restek® SilcoCan® air sampling canister when collecting
low-level volatile sulfur compounds or other active compounds.
*Vacuum/pressure gauge included in kit; air sampling canisters sold separately.
also available
➲ See for miniature air
sampling kits.
➲ See for canister and flow
controller repair service.
Canister Volume/Sampling Time Orifice Siltek-Treated Stainless Steel
400 cc 1 Liter 3 Liter 6 Liter 15 Liter Flow Size cat.# price cat.# price
8 hour 24 hour 48 hour 125 hour — 0.5–2 mL/min 0.0008" 24217 24216
2 hour 4 hour 12 hour 24 hour 60 hour 2–4 mL/min 0.0012" 24160 24165
1 hour 2 hour 6 hour 12 hour 30 hour 4–8 mL/min 0.0016" 24161 24166
— 1 hour 4 hour 8 hour 20 hour 8–15 mL/min 0.0020" 24162 24167
— — 2 hour 3 hour 8 hour 15–30 mL/min 0.0030" 24163 24168
— — 1 hour 1.5 hour 4 hour 30–80 mL/min 0.0060" 24164 24169
— — — 0.5 hour 1 hour 80–340 mL/min 0.0090" 22101 22100
4
5
1 /4" NPT
2
3
1
1. Veriflo® SC423XL flow controller
This flow controller is the heart of the sampling train.
It is a high-quality device designed to maintain a
constant mass flow as the pressure changes from
–30" Hg to 7" Hg (we recommend you stop sampling
at or before 7" Hg of vacuum). All wetted parts of the
flow controller can be Siltek® treated.
2. Stainless steel vacuum gauge,
1/ 8-inch NPT
Fitted to the flow controller, the gauge monitors
canister vacuum change during sampling.
3. 1/ 4-inch Siltek® sample inlet
The 0.3 m x 1/4" tubing includes a stainless steel
nut on the inlet end to prevent water droplets from
accumulating at the edge of the tubing, where they
could be pulled into the sampling train.
4. 2-micron frit filter and washer
Located prior to the critical orifice to prevent
airborne particles from clogging the critical orifice.
Replaceable. Available in stainless steel or Siltek®
treated for optimum inertness.
5. Interchangeable critical orifice
An interchangeable ruby critical orifice allows you to
control the flow with very high precision.
Note: All fitting connections are 1/4" tube, except
where noted.