Purchasing guide / Version 1.0
A replenishment order needs a fluid history
Make unknown fill chemistry and missing acceptance evidence visible before ordering replacement fluid.
Start with what is already in the loop
A purchase request should distinguish initial fill, routine replenishment, and a proposed change of formulation. We recommend recording the existing product identity and the evidence behind that identification. An old drum label is useful context, but it does not by itself document everything added during years of service.
When the existing fill is unknown, record it as unknown. Ask the equipment owner and fluid supplier to define the investigation and change-control requirements. Do not let a blank field become an implied compatibility approval.
Separate a condition report from an acceptance decision
For any service report, capture the sampling date, location, sample identifier, methods and the party interpreting the results. Ask that party which tests address the actual service concern and what limits apply to the exact formulation. This worksheet supplies a record structure, not universal test limits or a maintenance interval.
Dow describes DOWFROST as an inhibited formulation. That illustrates why a base-chemical name alone is an incomplete record of the product being purchased; it does not establish the condition of an installed fluid.
Close the receiving loop
Specify the container size and transfer connection alongside lot traceability, seal checks and the receiving hold point. Identify who can release the delivered material for use, and how a discrepancy is resolved. Keep handling requirements with the exact product SDS and the site procedure.
Requirement → evidence → decision boundary
An editorial checklist for your review—not a table of product specifications.
| Requirement | Evidence to request | What it does not establish |
|---|---|---|
| Installed fill | Fill records, replenishment log and unresolved identity questions | Do not infer compatibility from color or a generic chemical name. |
| Condition assessment | Traceable sample report and formulation-specific interpretation | A measurement without an applicable limit is not a release decision. |
| Receiving release | Lot documents, packaging requirements and named approver | Delivery does not mean authorization to add the material. |
Make the open questions useful
Record requirements, evidence gaps and approval owners in a downloadable purchasing brief.
Open the requirements worksheet →Revision record
1.0 · September 10, 2026 — Initial source-based edition. No original testing or product qualification is claimed.
For engineering and purchasing teams defining closed-loop fluid requirements. This collection does not size a ground loop, prescribe a concentration, or approve a substitution.
Suggest a correction