Make the specification measurable.
A useful specification identifies both the property and its test method. Requirements vary by product, so chemical analysis, particle testing and physical checks should be selected to match the material and end use.
Please include your required test method and acceptance limits when requesting a quotation. Documentation and any sample approval should be agreed before ordering.
Chemical composition
Main constituents and relevant impurities, evaluated against the selected grade.
Particle-size distribution
Grain fractions, fine content and oversize control using the agreed method.
Physical properties
Bulk density, grain shape or other application-specific properties.
Batch documentation
Agree product identification, batch references and the required inspection records.