18
2
3
All fitting connections are
1
/
4
" tube,
exceptwherenoted.
PassiveAirSamplingKits
BetterPerformanceat aBetterValue
• Improveddesign eliminates leaks at the filter.
• Siltek
®
-treated components ensure a very inert surface.
• Excellent for sampling times from1hour to125hours, or grab sampling.
Restek’s passive air sampling kit incorporates all hardware necessary to collect air samples, and is easy to
assemble for field sampling.*The improved filterdesigngreatly reduces thenumberof potential leak sites.
The passive air sampling kit is available in six sampling flow ranges, and in stainless steel or Siltek
®
treat-
ed finish.The stainless steel kit is ideal topartnerwith theRestekTO-Can
™
air sampling canister forTO-
14A andTO-15methods.Use the Siltek
®
-treated versionwith theRestek SilcoCan
™
air sampling canister
when collecting low-level volatile sulfur compounds, or other active compounds.
*Air sampling canisters sold separately.
AirSamplingKits
1.Veriflo
™
SC423XL
flowcontroller
This flow controller is the
heart of the sampling train. It
is a high-quality device
designed tomaintain a con-
stant mass flow as the pres-
sure changes from 30" Hg to
5" Hg (we recommend you
stop sampling at or before 5"
Hg of vacuum). All wetted
parts of the flow controller
can be Siltek
®
-treated.
2.Stainlesssteel
vacuumgauge
Fitted to the flow controller,
the gaugemonitors canister
pressure change during sam-
pling.
3.
1
/
4
-inchSiltek®
sample inlet
The 2m x
1
/
4
-inch 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
filterandwasher
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
criticalorifice
An interchangeable sapphire
critical orifice allows you to
control the flowwith very high
precision.To select the cor-
rect critical orifice for your
sample, see table above.
Available in stainless steel, or
Siltek
®
-treated for optimum
inertness.
4
5
1
/
4
"NPT
1
a
plus1
story
“Restek has consistently provided high quality chromatography columns and supplies tome forwell over a decade. Over the last two
years, I have extensively been involvedwith air analysis,TO-15, etc., andRestek provides the highest quality canisters, mini-cans, and
flow controllers in themarket today.”
Scott Van Etten, IH LaboratoryManager, EMSL Analytical
Canister Volume*/Sampling Time
Flow
Orifice
Siltek
®
-Treated Stainless Steel
400cc
1 Liter
3 Liter
6 Liter
15 Liter
(sccm)
size
Sampling Kits
Sampling Kits
8 hour
24 hour
48 hour
125 hour
— 0.5–2
0.0008"
24217
24216
2 hour
4 hour
12 hour
24 hour
60 hour
2–4
0.0012"
24160
24165
1 hour
2 hour
6 hour
12 hour
30 hour
4–8
0.0016"
24161
24166
— 1 hour
4 hour
8 hour
20 hour
8–20
0.0020"
24162
24167
— — 2 hour
3 hour
8 hour
20–40
0.0030"
24163
24168
— — — 1 hour
3 hour
40–80
0.0060"
24164
24169
