Sample preparation process flowchart
An editable sample preparation workflow for confirming instructions and sample status, preparing materials, checking the preparation record, correcting issues and handing prepared samples to testing.
What the sample preparation process is
This chart starts when a sample is released for preparation and separates scope confirmation, workspace preparation, execution and verification before the prepared sample moves to testing. It is designed to be adapted for the handling method, materials and records that your laboratory actually uses.
An unclear instruction or unsuitable preparation does not become an informal correction. The chart holds the work for clarification, documents the assessment and repeats the required preparation step before handoff.
What this flowchart covers
In this template
- Four stages covering instruction confirmation, preparation, verification and transfer to testing.
- A decision that holds preparation when the instruction or sample status is unclear.
- A preparation-record and material check with a documented correction and repeat route.
- An identified handoff of the prepared sample to the next testing activity.
When to use this template
- You need to separate sample preparation from the testing method that follows it.
- Preparation discrepancies are being corrected without a visible record or owner.
- You are documenting how an analyst hands a prepared sample to another testing team.
How it works
Define preparation instructions
Link the opening decision to the approved instruction, sample status and handling information your laboratory requires. Keep method-specific quantities, conditions and limits in the controlled local record.
Name the preparation checks
Specify which materials, containers, calculations and records must be checked before a prepared sample can be transferred. Assign an independent reviewer where your procedure requires one.
Test the correction route
Walk a real preparation discrepancy through the hold, assessment and repeat path. Preserve the original observation and record who authorized the next action.
Frequently asked questions
What does a sample preparation process flowchart cover?
It maps the work between sample release and testing: confirm the instruction and status, prepare the workspace and sample, verify the preparation record and materials, correct a problem where needed, then label and transfer the prepared sample.
What should happen when preparation instructions are unclear?
Hold the preparation work, clarify the instruction with the responsible owner and record the resolution before handling the sample. Do not rely on an analyst to infer a missing instruction from a similar test.
Does this template define preparation conditions?
No. It is an editable workflow, not a method. Add the conditions, quantities, equipment controls and acceptance rules from the approved procedure that applies to your sample and test.