Build bottles from the analyte list
Different tests can need different containers, preservatives and sample fractions. Provide the complete target list so the bottle plan can be built around the actual work.
Follow the assigned instructions
Do not rinse a preserved bottle or transfer a sample between containers unless the written collection procedure directs it. Preparation and preservation should remain linked to the chosen analysis.
Plan the timing
Collection starts the sample clock for parameters governed by holding times. Agree receiving and transport arrangements before sampling, particularly where field measurements or short processing windows apply.
Reconcile the record
Match bottle labels, sample IDs and the chain of custody. Identify collection date and time, requested tests and any deviations or delays for review.
Related testing & guidance
Technical & service references
Vanguard water-testing menuEPA: Clean Water Act method questionsEPA: Drinking-water analytical methodsSource review: November 8, 2026. The agreed method and project scope govern the testing.