A polyacrylamide test report is useful only if you know which sample it describes and how its results relate to your purchase specification. Before ordering APAM, CPAM or NPAM, read the identity, date, limits and measured values together—not just the word “pass.”
For example, a report for one anionic PAM sample cannot establish the properties of a different grade or a later shipment. The steps below help buyers turn a report into concrete questions for the supplier.
Start with the product name, polymer type, physical form, grade or product code, sample or batch reference, and the dates of sampling and testing. Match these against the quotation and the specification you intend to use. If the report identifies only a laboratory sample, do not assume it is the certificate for the production lot you will receive.
Ask which entity took the sample and issued the report, and whether the proposed shipment has its own lot-specific document. These links in the evidence chain matter as much as a result in range.
The following English rendering uses selected rows from a Tairan internal inspection report for an anionic PAM sample collected on 15 February 2024. It is a dated sample example, not a current TDS, a shipment COA or a general guarantee for Tairan PAM grades.
| Inspection item | Report limit | Sample result |
|---|---|---|
| Solids content | ≥90.0% | 92.3% |
| Residual acrylamide monomer, dry basis | ≤0.02% | 0.01% |
| Dissolution time at 1 g/L | ≤60 min | 51 min |
| Water-insoluble matter | ≤0.3% | 0.20% |
The “dry basis” qualification belongs to the residual-monomer result; it is not interchangeable with a concentration in treated water. The dissolution-time result belongs to the stated 1 g/L test condition; it does not predict make-down time in every plant.
The example report records a relative molecular-mass entry of 1,800 × 104 (18 million). It does not specify the test method in the displayed table, so do not use that single figure to rank competing polymers without a comparable method. The report does not contain a measured hydrolysis degree. A separate grade description of 20%–26% hydrolysis must not be presented as a result of this report.
Similarly, the sample’s residual-monomer value does not by itself certify suitability for drinking-water, food-contact or any regulated destination. Those uses require the applicable product, dose, documentation and local requirements to be checked separately. A pass mark also says nothing about settling rate, filter-cake dryness or the dose that will work on your sludge or slurry; those questions need representative application tests.
A current technical data sheet (TDS) describes the grade and its stated characteristics; ask which values are typical and which are contractual limits. A safety data sheet (SDS) covers identification, hazards and handling—not proof that a batch meets your purchasing specification. For US hazard communication, OSHA Appendix D sets out SDS information sections. A certificate of analysis (COA) should be checked against the identified shipment lot and the agreed acceptance criteria.
A useful document request: “Please confirm the APAM grade/code offered for [application], and send its current TDS and SDS. For the proposed shipment, please confirm the lot identification and available COA, including test limits, results, units and methods. Our process sample and acceptance criteria are attached.”
For product context, see Tairan’s APAM page. For the separate question of plant performance, read the mining-water trial guide. You can also send the exact grade and application requirements for a documentation and sample-review discussion.
