Gas purification cartridges
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Products for point-of-use gas purification
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Features
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| For maximum column lifetime and interference-free detector operation in
GC high purity of the carrier and burner gases is prerequisite. If the
gas supplies available in a laboratory do not meet quality
requirements, installation of an in-line gas purification system is
generally recommended. We offer purification systems which use special
absorber cartridges to reduce the concentration of oxygen, water or
hydrocarbons in the gas:
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O2-free® (formerly Oxisorb®)
for removal of oxygen by chemisorption: specially treated chromium trioxide on a large surface support,
packed under helium in aluminium or glass cartridges (the latter for visual control of the absorber mass)
as a side effect water is removed by physisorption
capacity per cartridge 100 ml oxygen and 500 ml water (gas); final purity < 5 ppb oxygen, < 30 ppb water;
applicable for noble gases, nitrogen, hydrogen, carbon monoxide, carbon dioxide and saturated hydrocarbons; not applicable for purification of oxygen, pressurised air and unsaturated hydrocarbons
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H2O-free (formerly Hydrosorb)
for removal of water by physisorption:
highly reactive molecular sieve, packed in aluminium cartridges under He;
capacity per cartridge ~ 1 l water (gas); final purity < 20 ppb water
applicable for noble gases, nitrogen, hydrogen, carbon monoxide, carbon dioxide, saturated hydrocarbons, halogenated hydrocarbons, nitrous oxide, pressurised air and oxygen
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HC-free (formerly Accosorb)
for removal of hydrocarbons (HC), especially oil traces by physisorption:
activated carbon, packed in aluminium cartridges under helium
capacity per cartridge 1 mg ethane, 180 mg higher HC, 8 g oil vapour;
final purity < 10 ppb HC (except methane)
applicable for noble gases, nitrogen, hydrogen, carbon monoxide, carbon dioxide, methane and pressurised air; not applicable for purification of oxygen
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Holders for cartridges are available for tubing lines with 1/4", 1/8" or 6 mm OD. For 1/8" lines we also supply a multiple absorber for combination of two absorber cartridges in series (e. g. O2-free and H2O-free for carrier gases).
Please remember to exchange the cartridges in regular intervals (e. g. whenever you change the steel gas cylinder), because exhausted purification cartridges are useless!
Regeneration of the absorber mass is uneconomical or not possible.
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Ordering information
Description
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Pack of
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REF
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Gas purification cartridges
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O2-free cartridges, glass (for visual control)
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2
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734325
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O2-free cartridges, aluminium
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2
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734329 |
H2O-free cartridges
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2
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734363 |
HC-free activated carbon cartridges
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2
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734364 |
Holders for gas purification cartridges (without cartridges)
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Small absorbers L
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for 6 mm OD tubing
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1
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734326 |
for 1/4" OD tubing
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1
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734327 |
for 1/8" OD tubing
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1
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734328 |
Small absorber L, PN 10, with protective jacket (for cartridges with visible packing)
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| for 6 mm OD tubing |
1
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734322 |
| for 1/4" OD tubing |
1
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734323 |
| for 1/8" OD tubing |
1
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734324 |
Multiple absorber II
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Multiple absorber for 1/8" OD tubing
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1
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734361 |
Protective plexiglas jacket PN 10
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1
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734362 |
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