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REFERENCE STANDARDS | ENVIRONMENTAL
Gases
Gases
Method 8240
(Volatile Organic Compounds [VOCs])
tech tip
Achieving the Best Results From Gas Standards
In order to achieve the best results from gas standards, proper
handling and storage of gas solutions is of vital importance. Use
the following tips to help ensure trouble-free performance:
• Before opening the sealed ampul, gently invert the ampul .
several times. This will redissolve any gases that may have
migrated into the headspace of the ampul.
• When diluting a gas standard, always add it to a solvent. Adding
the gas standard to an empty vessel prior to adding solvent will
result in the loss of gas compounds.
• Keep the gas standard cold throughout its use. Make sure it is
cold before opening the ampul, work quickly to minimize heat
transfer from hands or room, and only dilute the standard into a
very cold solvent.
• When diluting a gas standard in solvent, make sure the pipette
or needle tip is directly above, or immersed below, the solvent
surface.
• We recommend that any unused portion of gas standard be
disposed of after it has been removed from the sealed ampul.
If it is necessary to store the unused portion, place it into a
tightly capped vial with little to no headspace and store it in the
freezer.
• We recommend that any gas solutions that have been stored
outside of a sealed ampul be disposed of after 7 days.
Spectra (Linde)
104 L Cylinders:
Size: 8 x 24 cm .
Volume/Pressure: .
104 liters of gas .
@ 1,800 psi.
Weight: 1.5 lb/0.7 kg
Scotty (Air Liquide)
110 L Cylinders:
Size: 8.3 x 29.5 cm .
Volume/Pressure: .
110 liters of gas .
@ 1,800 psi.
Weight: 2.2 lb/1 kg.
U.S. DOT Specs: 3AL2216
Cylinder Construction: aluminum
Cylinder Fitting: CGA-180 outlet
cylinder design
2,000 µg/mL each in P&T methanol, 1 mL/ampul
cat.# 30020 (ea.)
Bromomethane (methyl bromide) (74-83-9)
Chloroethane (ethyl chloride) (75-00-3)
Chloromethane (methyl chloride) (74-87-3)
Trichlorofluoromethane (CFC-11) (75-69-4)
Vinyl chloride (75-01-4)
624 Calibration Mix #1 (gases) (5 components)
200 µg/mL each in P&T methanol, 1 mL/ampul
cat.# 30439 (ea.)
2,000 µg/mL each in P&T methanol, 1 mL/ampul
cat.# 30042 (ea.)
Bromomethane (methyl bromide) (74-83-9)
Chloroethane (ethyl chloride) (75-00-3)
Chloromethane (methyl chloride) (74-87-3)
Dichlorodifluoromethane (CFC-12) (75-71-8)
Trichlorofluoromethane (CFC-11) (75-69-4)
Vinyl chloride (75-01-4)
502.2 Calibration Mix #1 (gases) (6 components)
1 ppm in nitrogen, 104 liters @ 1,800 psi
cat.# 34414 (ea.)
1 ppm in nitrogen, 110 liters @ 1,800 psi
cat.# 26361 (ea.)
1 ppm in nitrogen, 110 liters @ 1,800 psi (Pi-marked cylinder)
cat.# 34414-PI (ea.)
100 ppb in nitrogen, 104 liters @ 1,800 psi
cat.# 34428 (ea.)
100 ppb in nitrogen, 110 liters @ 1,800 psi
cat.# 26362 (ea.)
100 ppb in nitrogen, 110 liters @ 1,800 psi (Pi-marked cylinder)
cat.# 34428-PI (ea.)
No data pack available.
Gas standards are subject to hazardous materials shipping fees by most
freight carriers. All calibration gas standards are nonreturnable due to
DOT hazardous shipping requirements.
Benzene (71-43-2)
Ethylbenzene (100-41-4)
Toluene (108-88-3)
m-Xylene (108-38-3)
o-Xylene (95-47-6)
p-Xylene (106-42-3)
BTEX Gas Mix (6 components)
1 ppm in nitrogen, 104 liters @ 1,800 psi
cat.# 34418 (ea.)
1 ppm in nitrogen, 110 liters @ 1,800 psi
cat.# 26367 (ea.)
1 ppm in nitrogen, 110 liters @ 1,800 psi (Pi-marked cylinder)
cat.# 34418-PI (ea.)
No data pack available.
Acrylonitrile
Benzene
1,3-Butadiene
Chloroform
1,2-Dichloroethane
Dichloromethane
Tetrachloroethylene
Trichloroethylene
Vinyl chloride
Japan Calibration Mix(9 components)
For more gas .
calibration .
standards,
see
also available
High-Purity VOC Regulators
See