Technical section
Name the product and end use. State IS 797 Grade I, Grade II or a custom specification, then list every governing parameter with unit, minimum/maximum, basis and test method. Add particle-size requirements only when the process needs them.
- NaCl and measurement basis
- Moisture
- Water-insoluble matter
- Calcium, magnesium, sulphate and iron
- Particle-size distribution if applicable
- Appearance or foreign-matter requirement
Evidence and acceptance section
Define lot size, who draws the sample, how many increments form the composite, which laboratory or supplier method is accepted, when the certificate is due and how a dispute sample is retained. Identify which parameters cause rejection.
Commercial and logistics section
State trial and recurring quantity, packing, markings, dispatch cadence, delivery point, freight basis, unloading, weighment, quote validity, payment, documentation and delay or rejection handling. Attach the requirement as a controlled document to the purchase order.
- Quantity and schedule
- Loose/25 kg/50 kg packing
- Ex-refinery or delivered basis
- Transport and unloading responsibility
- Invoice/HSN and dispatch documents
- Payment milestones and validity
Copy-ready purchase-specification structure
Use these headings in order: buyer and end use; product and applicable standard; parameter table; physical form and particle size; trial and recurring quantity; packing and marking; dispatch and delivery; sampling and testing; required certificates; weighment; acceptance, deduction and rejection; payment; validity; deviation schedule; and authorized approvals. Number every clause so a supplier can respond against it.
Require the bidder to list deviations in one place. Silence should not be treated as acceptance when the supplier's brochure or quotation says something different. After award, attach the final specification and accepted deviation sheet to the purchase order and prohibit substitutions without written change approval.
- Requirement owner and revision
- Complete parameter table
- Form, packing and marking
- Lot, sampling and evidence
- Delivery and weighment
- Acceptance and change control
Buyer questions
Frequently asked questions
Can I write only ‘industrial salt 99%’?
That leaves moisture, impurities, test basis, packing and acceptance undefined. Use a full parameter table where process quality matters.
Who should approve the specification?
The buyer’s process/quality owner and procurement team should approve it, and the supplier should accept it in writing before dispatch.
Should the RFQ include a sample?
A sample can help, but it should be linked to written parameters and a lot-control plan. An unlabelled sample alone is difficult to enforce.
Primary references
Official sources used on this page
Standards and regulations can change. Follow the linked authority and verify the current requirement for the actual contract.
- Industrial-grade salt numerical reference tableSalt Commissioner Organisation, Government of India