The research procurement desk

Laboratory Reagent Supplier Evidence Worksheet

Use the tool in your browser. The page processes your entries locally and does not save them.

Supplier evidence comparison

Set the evidence you need for a research purchase. Compare the records for two offers and save a review with the questions and actions that remain.

Review setup

Review reference (optional) Offer A label (optional) Offer B label (optional)

Purpose and evidence needed (optional)

Record evidence for one offer at a time

Mark which requirements apply to both offers, then record the evidence for the selected offer. Switching offers keeps both records while this page stays open.

Offer to edit

How to record evidence status

Documented. Cite the record that supplies the evidence.
Missing document. The expected record is absent.
Document present, lot link missing. Cite the record and identify the missing lot or sample mapping.
Open. Record another evidence gap and what you plan to request.
Conflict. Cite the records that disagree and describe the discrepancy.
Planned. Record a later check, such as the one you will make at receipt.
Not applicable. Record the reason in the observation.

Compare the two offers

Follow-up includes unassessed, open, conflicting and planned checks. It also includes documented entries without a reference and entries marked not applicable that still need a reason or a decision about scope.

Loading the evidence comparison.

Decision note or handoff (optional)

This replaces both offers and the entire review with the worked example from the teaching resource.

Fictional worked example

The requested material is 1 L of HPLC-grade acetonitrile. The buyer needs the UV and water results for the offered lot. The two records below show how to distinguish gaps before release.

Example purchase record for requirement R03, offered-lot traceability
Offer and lot	Record and document date	Evidence status	Next action, owner and deadline
A · ACN-L017	Quote ACN-Q17, 2026-11-12. COA absent.	Missing document	Request the COA for ACN-L017. Laboratory buyer, 2026-11-19.
B · ACN-L021	COA ACN-C21, 2026-11-11. It identifies lab accession ACN-S21. The supplier’s lot is absent.	Document present, lot link missing	Ask the supplier for an intake record connecting ACN-S21 to ACN-L021. Laboratory buyer, 2026-11-19.

Copy these example rows as a starting point, or enter your records above and download the comparison.

This record captures evidence and follow-up for research procurement. Counts describe incomplete reviews. A supplier’s reliability, a material’s identity and its suitability require separate assessment.