Use of headspace bottles and sample pads
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In order to achieve the best performance with headspace GC, be careful to take note of sample preparation and instrument setup. Bottles and lids are very important and often overlooked, and are also prepared for elemental headspace analysis.
It is important to make sure you use the right bottle and lid!
Available in 6, 10, and 20 ml sizes in the headspace bottle. Use a standard vial to ensure adequate headspace, and this must be achieved at a standard ratio, which must of course be a sample that is not over-diluted. Usually the reserved capacity after comparison should be at least 50% of the sample volume
The headspace bottle has a round bottom or a flat bottom. Both types are suitable for injection but round bottom bottles tend to be stronger in terms of storage sampling. Therefore, the more reliable work should be the autosampler of the round bottom bottle. Round bottom bottles are also often subject to higher pressures and are more compatible with applications such as temperature rise and derivatization.
Correct cover clamp
The headspace bottle must be properly pressed. Make sure the gland clamp is not properly adjusted. The hat should not affect the use of the bottle. To find out more about the proper use of the capper and the headspace bottle.
Injection pad selection
Use a suitable temperature-resistant sample pad. Unsuitable injection pads can lead to dissolution, which can lead to contaminated headspace.
The sample bottle should be clean. Not all bottles are standard, dirty or reusable vials, which can cause ghost peaks or false detections.
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