Demonstrate sampling recovery
Recovery should be demonstrated for sampled contact materials and methods.
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VISUAL GUIDE 03
Swab vs rinse sampling
Choose a method for the question and the surface—not simply the easiest sample to collect.
THE A3 FIELD POSTER
Choose meaningful evidence
Compare local surface sampling and system rinses, with examples that make area and volume matter.
- Swab and rinse illustrated side by side
- Area and dilution examples with units
- Six checks for sampling and interpretation
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CLEAN VALIDATED / VISUAL GUIDE 03
Swab vs rinse sampling
LOCAL SURFACE
Swab
Targets a defined, accessible location. Record the area, technique, materials and recovery evidence.
CONTACTED SYSTEM
Rinse
Examines a justified rinse contacting the system. Understand coverage, dilution and residue behaviour.
DECISION
Evidence
Connect the result to what was sampled. Neither method automatically proves every surface is clean.
Methods may complement each other. Selection depends on equipment access, the residue and method capability; suitability needs to be demonstrated for the intended use.
LEARNING OBJECTIVE
What this guide helps you explain
Compare the evidence supplied by local surface sampling and a defined rinse procedure.