TDS: what is the proposed product?
A technical data sheet describes the grade and its intended handling or application characteristics. Some values may be typical rather than guaranteed. Ask explicitly which properties form the sale specification, how they are measured and which limits will govern acceptance.
A viscosity value needs a defined method and conditions to support comparison. Concentration, temperature and measurement arrangement can matter. Do not rank two products from unexplained numbers on separate data sheets.
COA: what was reported for this lot?
A certificate of analysis should identify the product, batch and reported results against the relevant specification. A representative COA may help evaluate the supplier, but it is not the delivered batch certificate. Check that the shipment record and COA refer to the same material.
Distinguish a measured lot result from a copied specification limit. Ask which tests are performed for release and which values are otherwise established. Missing units, ambiguous methods or a conflicting product code should trigger clarification before acceptance.
SDS: how should the product be handled?
The safety data sheet addresses hazards, handling, exposure controls, storage and related safety information for the supplied product. It is not a certificate of treatment performance. Request the current applicable document and have the responsible safety or logistics team review its suitability for the intended operation and destination.
Do not assume all PAM powders or emulsions have identical handling or transport requirements. Avoid transferring instructions from another grade simply because the product names look similar.
Build a consistent document set
Put the product code, revision, lot reference where applicable and agreed purchase specification beside each document. List inconsistencies and obtain a corrected or clarified set. Retain superseded versions separately so operators do not unknowingly use outdated preparation instructions.
Use the quality review for supplier discussions and batch acceptance checks at receipt. The documents establish identity and specifications; the application trial establishes whether the proposed product meets the treatment objective.