Restek Integrated Passive Air Sampling Kit .0030 Orifice, Siltek Treated

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.

Canister Volume/Sampling Time							Siltek Treated	Stainless Steel
400 cc	1 Liter	3 Liter	6 Liter	15 Liter	Flow	Orifice Size	cat.#	cat.#
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

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" NPT

   Fitted to the flow controller, the gauge monitors canister vacuum change during sampling.

3. 1/4" 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 µm 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.

*Vacuum/pressure gauge included in kit; air sampling canisters sold separately.