Selection Guide for Small N2 Gas for Laboratory
Parameters to consider
Amount of N2 gas needed: 1L, 2L, 3L/min?
N2 Gas Purity: 95%, 99%, 99.9%, 99.99%, 99.999%?
Available Input Air: Room Air, Pressured?
Output N2 gas pressure needed: 0.4 Mpa OK?
How often you need N2 gas?: < >8hrs/day?
Cost: Initial Cost, Running Cost, Total Cost?
Methods Pro Con 1 Purchase N2 gas in cylinder No initial Cost No Equipment Installation Total Cost is high Cylinder delivery in sensitive area Licensed handler required 2 Liquid N2 in container Less expensive than cylinder approach for high volume user Not suited for small N2 constant gas users 3 Membrane N2 generator Less Initial Cost N2 Purity up to 99% 4 Catalytic N2 Filter Generator Less expensive initial cost than PSA High N2 Purity up to 99.999% Higher Running Cost than PSA due to high cost of the filters & frequent filter changes 5 PSA N2 Generator without compressor N2 Gas Purity Level; 99% to 99.99% Need for Pressured air line 6 PSA N2 generator with compressor ( Micro-Mini Series) N2 Gas Purity Level; 99% to 99.99% No pressured air line needed. More expensive than #5
Methods
Pro
Con
1
Purchase N2 gas in cylinder
No initial Cost
No Equipment Installation
Total Cost is high
Cylinder delivery in sensitive area
Licensed handler required
2
Liquid N2 in container
Less expensive than cylinder approach for high volume user
Not suited for small N2 constant gas users
3
Membrane N2 generator
Less Initial Cost
N2 Purity up to 99%
4
Catalytic N2 Filter Generator
Less expensive initial cost than PSA
High N2 Purity up to 99.999%
Higher Running Cost than PSA due to high cost of the filters & frequent filter changes
5
PSA N2 Generator without compressor
N2 Gas Purity Level; 99% to 99.99%
Need for Pressured air line
6
PSA N2 generator with compressor
( Micro-Mini Series)
No pressured air line needed.
More expensive than #5
Note: Unless it specifically PSA is noted, it is not a PSA N2 gas generators.