Sample Collection & Chain of Custody
Getting a representative sample to the lab intact, with a documented trail that holds up under review.
Downloadable Template
Lab Sample Chain-of-Custody Form
A ready-to-print, fill-in-the-blank form — print it, complete it on site, and keep a signed copy for your records.
Grab vs. Composite Sampling
Choosing the right method matters as much as running the test correctly once the sample arrives.
Sample Preservation & Holding Times
Each parameter has a specific preservative and maximum holding time; missing either invalidates the result.
Chain of Custody Documentation
A documented, unbroken record of who handled a sample from collection through final analysis.
Field Equipment Calibration
Meters used to collect field parameters need their own documented calibration schedule.
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