What factors should be considered when choosing a sampling method
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What factors should be considered when choosing a sampling method?
First, from a safety perspective; second, in terms of representativeness
The liquid sample can flow; it is a fresh sample, and safety is also taken into account
1. The physical properties of the target, such as physical form, volatility, and toxicity. 2. Based on the items to be tested, select the appropriate container material, preservative, storage period, and sampling volume. 3. Based on the target shape and environment, whether it is a river or pipelines, etc. 4. The sampling method regarding the ease of access to the sampling location.