Define duty before requesting a grade
State source water, intended use, separator and required analytical result.
PAC for potable supply and PAC for industrial DAF need different qualification evidence.
Attach the useful water envelope
Include pH, alkalinity, temperature and relevant turbidity, color or contaminant ranges.
Name difficult but credible conditions instead of providing only an average.
Declare the purchase specification
Request form, aluminum basis, basicity method and relevant quality and handling information.
Keep any required product-specific eligibility separate from treatment-test success.
Describe the test and quantities
Provide preparation, mixing, incumbent, acceptance method and sample or trial schedule.
Separate laboratory, plant-trial and repeat-supply requirements.
Keep logistics and identity explicit
Add packing, delivery scope, destination, documents and receiving checks.
Connect the quotation and eventual production lot to the candidate actually evaluated.
Carry the treatment evidence into purchasing
Keep water analysis, product identity, preparation, final pH, mixing and separation results attached to the buying decision. Resolve the relevant next questions with How to Qualify a PAC Flocculant Manufacturer or Supplier; 30% Al2O3 PAC Powder: What to Check Before Buying; Drinking-Water PAC: Verify Grade Eligibility Before Ordering; PAC Bulk Export Quotes: Delivery Terms and Supply Control.
A technically accepted candidate still needs an identifiable supply scope, current product documents and a feasible delivery and receiving plan. Record any conditions still pending. Changes in formulation, water source, production state or treatment equipment should trigger review rather than automatically inherit an earlier approval.
Connect the approved sample to supply
A useful PAC RFQ begins with the treatment duty. State drinking-water or industrial-wastewater service, raw-water analysis, normal and difficult ranges, current coagulant, feed point, mixing, separator type and required treated-water measurement. Include temperature, pH and alkalinity because they strongly shape the screening plan. Do not request a universal dose without the water and process context needed to test it.
Ask the supplier to identify each proposed grade by product code, liquid or powder form, active Al2O3 basis, basicity method and relevant quality limits. Request a current COA and SDS, preparation or storage guidance and the proposed sample quantity. If several grades are offered, require a reason for each candidate and a manageable jar-test sequence.
Separate laboratory, field-trial and commercial quantities. State the test schedule, destination, monthly demand, packaging, pallet or marking needs and required export documents. Define acceptance measurements and the incumbent reference before comparing quotations. Delivered cost should be normalized for active basis, expected dose, handling, alkalinity correction, sludge and downstream performance.
Preserve traceability from sample to repeat order. The approved sample code, test report, quotation, purchase order, production lot and receiving check should remain connected. Require disclosure of material specification or formulation changes and define when revalidation is necessary. A complete RFQ gives technical sales enough evidence to propose a bounded sample path and gives purchasing a defensible basis for comparing supply.
Ask technical and commercial questions in the same document but keep their acceptance criteria separate. Technical approval should identify the tested water and result; commercial approval should identify price basis, Incoterm, lead time, packaging and document set. This prevents the lowest quoted unit price from silently substituting a different concentration, grade or logistics basis for the sample that actually passed the treatment test.