Plan a trial for your application
Industrial wastewater coagulation
Record raw-water pH and turbidity. Compare floc settling and filtration resistance.
Chemical phosphorus removal
At equal active iron, compare treated-water phosphorus and sludge volume.
Purchase specifications and incoming inspection
Use these properties to compare grades within the product family. Example figures refer to the cited grade or source. Confirm the offered specification, packaging and lead time in the quotation. Guangrui · Liquid polyferric sulfate product information ↗
| Property | Unit | Published or agreed specification | Test conditions and checks |
|---|---|---|---|
| Total iron | % by mass | Confirm against the offered grade and purchase specification | Distinguish solid from liquid products and use an as-received basis. |
| Basicity | % | Confirm against the offered grade and purchase specification | Require the method to be reported. Basicity and iron content are separate parameters. |
| Insoluble matter | % by mass | Confirm against the offered grade and purchase specification | Specify the filtration and weighing procedures. |
When approving a sample, record the grade, methods, limits and specification revision. On receipt, match the packing lot number to the lot-specific COA and record the measured values and release decision.
From samples to commercial delivery
Packaging and receiving
Check solid bag liner and caking. For liquids, agree container capacity, net weight and sediment acceptance.
Storage and handling
Request storage conditions and the retest procedure for unusual sediment. Keep an unopened lot sample.
Sample and order lead times
State treatment scale, trial quantity and acceptable packaging. Request minimum quantities, preparation times and arrival dates for lab samples, pilot lots and routine replenishment.
Questions from the plant
How can powder and liquid PFS quotations be compared?
Convert to the same total iron basis and account for on-site preparation and receiving requirements.
Does equal iron content remove the need for a change-of-grade trial?
Use current raw water and equal settling time. Compare flocculation behaviour, pH and residual iron.
Report a delivery or batch issue
Include the order number, lot number from the package, label photos and inspection records for the affected lot. When retesting, check Total iron, Basicity, Insoluble matter.
Request documents for your application
TDS · Technical data sheet
For grade selection and sample approval, specify the grade and revision required.
SDS · Safety data sheet
Specify the country or region of use and the required language.
COA · Certificate of analysis
Request a sample COA during supplier review. For incoming inspection, provide the actual lot number.