What should be noted when taking samples with a bladder?
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What should be noted when taking samples with a bladder?
1). The sampling bulb must be dedicated, and it should be replaced with sample gas 3–4 times during sampling； When using a new gas cartridge, it must be purged with analytical gas more than 10 times. 2). Do not squeeze the bladder completely, to avoid creating a negative pressure that allows air to enter. 3). The bladder sample should not be over-pressurized to prevent the penetration of small molecular components. 4). The bladder sample must be analyzed immediately to prevent certain components from adsorbing or penetrating.
Aluminum foil sampling bags can be used. It is convenient and can avoid some of the above problems.