Identify what each quoted kilogram contains
A powder and an emulsion quotation cannot be compared responsibly from price per kilogram alone. Confirm the proposed code, supplied form and the basis of any concentration value. Ask whether a reported percentage describes polymer activity, total solids or another property before using it in a conversion.
If verified activity is available, an activity-adjusted price can help organise the comparison. It still does not prove equal performance or compatibility. Keep product identity and the ionic family visible so an apparent concentration advantage is not mistaken for approval of a different chemistry.
Use an explicit arithmetic basis
Price per kilogram of active polymer equals the comparable price per kilogram of supplied product divided by its verified active fraction. For illustration, 2 currency units per kilogram divided by a verified fraction of 0.4 gives 5 currency units per kilogram active. These are hypothetical calculation inputs, not current prices or Xinqi product specifications.
Where activity is unavailable or not directly comparable, use measured supplied-product consumption at the same accepted endpoint. Explain that basis instead of creating a false active-content estimate. A successful dose on a favourable laboratory sample is insufficient evidence for routine plant cost.
Include the equipment and preparation requirement
Check whether the plant can prepare each form according to its instructions. Powder requires controlled wetting and hydration; an emulsion requires its own inversion and dilution arrangement. Do not treat a liquid form as automatically ready for direct dosing without confirmation.
Record preparation labour, water, operating volume and any equipment changes that materially affect cost. The preparation guide establishes the practical questions, while product-specific limits should come from the supplier for the exact proposed grade.
Compare storage and handling on the actual schedule
Request packaging, handling and storage guidance for each offer. Consider use rate and the period a package remains open. A lower delivered price may be offset by unsuitable handling or excess residual material; a more expensive form needs evidence of a practical benefit rather than a general claim of convenience.
Discuss the options with Xinqi Polymer technical sales and confirm which forms are available for your application. The polyacrylamide supply reference supports purchasing questions. Neither a nominal liquid concentration nor bag format alone establishes the best treatment value.
Approve the full comparison rather than one number
Bring measured consumption, accepted water or cake result, preparation requirements and delivered commercial scope into one review. Keep optional capital or handling costs separate from product cost so purchasing can see which assumptions drive the decision. Revisit the result if any accepted condition changes.
The bulk quotation guide helps align quantity and delivery scope. Retain the accepted code and supplied form in the order confirmation, then preserve the trial record for receiving and repeat supply. A credible form comparison ends with a usable product on the plant, not the lowest isolated price on a concentration calculation.
Review an offer with an undefined solids percentage
Suppose a liquid offer states a solids percentage while the powder offer reports a different property. Ask both sources to explain their activity basis before converting prices. Do not assign the entire liquid solids fraction to active polymer without evidence. Keep the original supplied-product price visible while the concentration question is unresolved.
If comparable activity cannot be established, use the measured consumption required to meet the same plant result and identify that basis clearly. Include any preparation or equipment differences as separate review points. This lets the buyer make a usable comparison without presenting a mathematically precise result built from technically unverified inputs.
| Review point | Evidence to retain |
|---|---|
| Composition | Activity distinguished from other reported solids |
| Equipment | Both preparation routes are feasible |
| Value | Accepted performance and full scope compared |