A composite sample is taken over a period of time, while a grab
sample is a snap shot of what is in your well at the time you take
the sample. Homeowner samples are generally grab samples.
A composite sample is taken over a period of time, while a grab
sample is a snap shot of what is in your well at the time you take
the sample. Homeowner samples are generally grab samples.
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and so de
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grab sampler
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Future: grab
Perfect Future: Will grab or shall grab (not sure on this
one)
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random sample is a big sample and convenience sample is small
sample