Air Sampling Canisters
Air Whole Air Sampling and High VOC Recovery
- No pump or batteries needed
- Collect multiple contaminants at unknown concentrations
for multiple analyses
- Available in volumes of 1, 3, 6, and 15 liters
- Ultimate sulfur VOC stability during collection and storage
- Silcosteel-treated canisters and valves available
- High-purity, metal-to-metal seat 2/3-turn valve with
stainless steel diaphragms
- Eliminates leaks and sample adsorption
- Rugged, protective canister frame design
- Eliminates adsorptive weld spots inside the canister
- Temperature stability
- Higher temperature cleaning saves time and results in a cleaner
can
- 400-ml and 1-liter MiniVac® Canisters available for
indoor air, personal, soil gas, and emergency response sampling
228-Series Canister
Product Data Bulletin (PDF)
TO-Can Canisters
TO-Can Canisters are specifically designed for sampling compounds according
to U.S. EPA methods TO-14A and TO-15, which regulate the collection, storage,
and analysis of volatile organic compounds (VOCs) using treated air sampling
canisters.
- Electropolished interior; proprietary process (SUMMA equivalent)
- Interior cleaned extensively with ultrasonic method
- Metal-to-metal diaphragm valve improves canister performance
- Meet the holding time criteria for EPA methods TO-14A and TO-15
- Recommended for bromoform and select brominated compounds
- Use with Stainless Steel Passive Kit for optimal air sampling
of TO-14A and TO-15 compounds
SilcoCan Canisters
Low concentration and high reactivity make collection and measurement of low-level
sulfur VOCs in the atmosphere difficult. While electropolished TO-Can Canisters
are ideal for storing VOCs in ambient air, sulfur VOCs react with the canister's
metal interior making TO-Cans unsuitable for collecting and storing these types
of compounds. SilcoCan Canisters have a coated interior surface that eliminates
reactivity to sulfur VOCs.
- Silcosteel-treated interior (fused silica) for increased storage stability
of active polar or low-level sulfur VOCs
- Tough bonded interior will not crack from harsh handling in the field
or during transport
- Extensively cleaned interior
- Ideal for the collection and storage of low-level sulfur VOCs
- Use with Silcosteel Passive Kit for a completely passive sample path
Using TO-Can and SilcoCan Canisters
Ensure canister is certified clean and evacuated. TO-Can Canisters and SilcoCan
Canisters are shipped precleaned. Attach canister to the appropriate sampling
train to regulate sampling rate and time. Ship canister with sample to a laboratory
for analysis and cleaning.
Using Canisters with a Pressure Gauge
To confirm vacuum or pressure inside the canister during sampling, use
a high-quality gauge on the canister. The optional vacuum/pressure gauge
continuously monitors and accurately measures pressure inside the canister
from 30 inches Hg to 60 psig. Both TO-Can Canisters and SilcoCan Canisters
are available with a gauge.
|
 |
Applications for Canisters
- Ambient air sampling
- Indoor air investigations
- Fenceline monitoring
- EPA TO-14A and TO-15 compounds (TO-Can)
- Low-level sulfur VOCs (SilcoCan)
- Fugitive emissions
- Verifying cylinder gas purity
What Size Canister do I use?
Choice of canister size is based on the concentration of the compound in the
sample, sampling time, flow rate, and the sample volume required for the sampling
period.
Orifice
Diameter
(in)
|
Flow Rate
Range
(ml/min)
|
Canister Vol./Sampling Time
|
|
1L
|
3L
|
6L
|
15L
|
| 0.0008 |
0.5-2
|
8 hr
|
24 hr
|
48 hr
|
120 hr
|
| 0.0012 |
2-4
|
4 hr
|
12 hr
|
24 hr
|
60 hr
|
| 0.0016 |
4-8
|
2 hr
|
6 hr
|
12 hr
|
30 hr
|
| 0.0020 |
8-20
|
1 hr
|
4 hr
|
8 hr
|
20 hr
|
| 0.0030 |
20-40
|
- -
|
2 hr
|
3 hr
|
8 hr
|
| 0.0060 |
40-80
|
- -
|
- -
|
1 hr
|
3 hr
|
Following is a general canister size usage guideline:
| 400-ml and 1-liter canisters *: |
concentrated samples, e.g., soil gas |
| 3- and 6-liter canisters: |
integrated (TWA) ambient air sampling up to 24 hrs
|
| 15-liter canisters: |
reference standards |
* See Publication #1483 for
information on 400-ml and 1-liter canisters.
For a listing of laboratories that analyze Canisters, see the: Canisters
Analytical Laboratories Reference List
Ordering Information
Canisters and Passive Kits TO-Can and SilcoCan Canisters require a Passive
Kit to control airflow rate. Passive Kits contain all the necessary sampling
hardware including a flow controller, critical orifice, vacuum gauge, frit,
and sampling inlet. Available in a variety of flow ranges, SKC recommends
using the Stainless Steel Passive Kit with the TO-Can Canister and the Silcosteel
Passive Kit with the SilcoCan Canister. Simply choose your canister and the
appropriate Passive Kit. Canisters are not included with Passive Kits.
| Description |
1-liter *
Cat. No. |
6-liter *
Cat. No. |
| TO-Cans |
TO-Can Canister only
(electropolished-Summa equivalent) |
228-761 |
228-762 |
TO-Can Canister with Vacuum/Pressure Gauge
(30 in Hg to 60 psig) |
228-763 |
228-764 |
| SilcoCans |
| SilcoCan Canister only (Silcosteel-treated) |
228-765 |
228-766 |
| SilcoCan Canister with Vacuum/Pressure Gauge (30 in
Hg to 60 psig) |
228-767 |
228-768 |
| SilcoCan Canister with Silcosteel Valve |
228-769 |
228-770 |
SilcoCan Canister with Gauge/Silcosteel Valve
(30 in Hg to 60 psig) |
228-771 |
228-772 |
* Canisters and kits also available in 3 and 15 liters.
contact
SKC for additional ordering information.
228-Series Canister
Product Data Bulletin (PDF)
Canister Accessory
Ordering Information Online
Ordering
| Description |
Cat. No. |
| Canister carry case, holds two 6-liter canisters |
228-773 |
Passive Kits for Canisters
Each kit includes a Veriflo™ flow controller, critical orifice, vacuum gauge,
2 µm frit (filter), and sampling inlet. Canisters are not included.
Ordering Information Online
Ordering
Canisters Analytical Laboratories
Reference List
228-Series Canister
Product Data Bulletin (PDF)
Canister Applications
- Ambient air sampling
- Fenceline monitoring
- Collection of TO-14A & TO-15 compounds (TO-Can)
- Collection of low-level sulfur compounds (SilcoCan)
- Indoor air investigations
- Cylinder gas purity
- Fugitive emissions
Sample Collection with Canisters
TO-Can and SilcoCan Canisters are shipped precleaned. Ensure canister is certified
clean and evacuated (see Tech Tip below). Simply attach a canister to the appropriate
flow controller and critical orifice to regulate flow rate and sample duration.
Once sampling is completed, ship the canister to a laboratory for analysis and
subsequent cleaning.
After each sample is analyzed, canisters should be cleaned, certified clean,
and pre-evacuated by a qualified laboratory before they are sent back into the
field for further sampling.
This page was last modified August 18, 2004
