Liquid PAC Quotes: Compare 10% and 18% Al2O3 Offers

An offer described as 10% or 18% liquid PAC should state that the percentage means Al2O3 equivalent by mass of supplied product, if that is the intended basis. These figures illustrate how buyers encounter different concentration descriptions; they do not identify Xinqi stock grades or certified product specifications.

Ask for product code, concentration method, density, basicity and applicable documents for each offer. Do not assume that two formulations with different concentration are the same material with only water added or removed.

For a mass quotation, divide price per kilogram of product by the declared Al2O3 mass fraction to compare cost per kilogram of oxide equivalent. A volume quotation requires the appropriate formulation density first. Keep currency, delivery scope and quotation date common.

This normalization is an initial economic comparison, not an acceptance test. The treated-water cost method adds the actual product dose and operational consequences so concentration alone does not determine the award.

Check tank capacity, wetted materials, transfer equipment and calibrated pump range for the offered formulation using current product guidance. A more concentrated product may alter daily delivered volume and feed settings, but the real limits depend on its properties and the installed system.

Do not continue using the old litres-per-hour setting after a concentration or density change without technical review. Keep the dilution and flow-paced control basis explicit. Uncalibrated delivery can overwhelm the chemical difference the buyer intended to evaluate.

Use matched water, temperature, rapid mix, flocculation and separation measurements. Record final pH and alkalinity. Different basicity or composition can change the result even when additions are normalized to an equal aluminum basis.

Compare the useful range, residual or filtration measurements required by the duty and observed sludge consequences. A supplier chart from unrelated water cannot establish that the higher-concentration offer will use the same normalized dose at the plant.

Account for shipment size, delivery frequency, tank turnover, package residue and any unloading constraints. A lower shipped-water fraction can be economically useful, but only within a practical supply and storage plan. Ask for written storage guidance rather than assign one universal shelf life to all liquid PAC.

Confirm how a new product will be segregated during trial delivery and whether existing stock must be consumed or isolated first. Avoid mixing alternate formulations in a shared tank before their identity, handling and treatment compatibility have been reviewed.

Record the accepted product, assay and density basis, equipment settings, treatment window and commercial delivery scope. State which figures are supplier declarations and which results the buyer measured. A change of concentration should remain traceable through the quotation, order and receiving check.

Send the current formulation, equipment details, water data and delivery destination through the liquid PAC quotation request. A technically bounded comparison is more useful than choosing the lowest cost per litre without verifying the aluminum and process basis.

Prepare a changeover sheet showing old and proposed product identities, assay basis, density source, calibrated feed range and daily consumption calculation. Include the approval status of the tank and transfer arrangement.

Have operations and purchasing review the same sheet before the order is released. That avoids a situation where the laboratory compares equal aluminum additions but the commercial team budgets unchanged liquid volume or receives a differently concentrated material.