Custom PAC for Industrial Plant Trials | Beta Pramesti

Custom PAC is a Poly Aluminium Chloride grade qualified for a defined water and separation process. “Custom” does not prove performance: the buyer should lock the product specification, run side-by-side jar tests, confirm active dose and pH, and then verify treated water, sludge, consumption, and cost in a controlled plant trial.

PT Beta Pramesti Asia, through beta.co.id, supplies liquid and powder PAC and supports coagulant evaluation for industrial water and wastewater treatment in Indonesia. The final product, dose, and acceptance limits must follow actual samples, batch documents, equipment, and facility targets.

Technically reviewed: 31 July 2026.

When is a custom PAC worth evaluating?

A custom PAC belongs on the shortlist when influent variation or process limits are not met consistently by the approved grade. Relevant changes include turbidity, colour, organic matter, TSS, pH and alkalinity, temperature, floc character, hydraulic loading, or sludge-handling capacity.

Do not try to customise away a mechanical fault. Check rapid mixing, flocculation time, dosing pump, injection location, clarifier or DAF, filters, recycle, and sludge removal before concluding that a new grade is required.

Buyer question	Evidence required	Decision supported
What changed in the water?	Source and flow trends, pH, alkalinity, turbidity/TSS, colour, temperature, organics, and target parameter	Define normal and worst credible test conditions
What differs between grades?	TDS, SDS, liquid/powder form, Al₂O₃, basicity, density, pH, impurities, shelf life, and CoA	Establish product identity and comparison basis
Is the jar test comparable?	Same sample and mixing, dose sweep, blank/reference, final pH, floc, treated water, and sludge	Screen candidates without changing several variables
Can the plant deliver the correct dose?	Make-down concentration, pump output, backpressure, materials, injection point, and interlock	Determine plant-trial readiness
Is the commercial result better?	Product/active dose, supporting chemicals, water quality, sludge, energy, downtime, and cost per passing m³	Accept, hold, or reject the grade

Which specifications should be fixed before the trial?

Write the grade and acceptance limits into the purchase specification. Indonesia’s SNI 3822:2018 for Polyaluminium Chloride is listed as current and covers quality requirements and test methods for liquid and solid PAC in stated uses. A product standard does not set the dose for a particular plant, so the contract specification and application test remain necessary.

Specification group	Example evidence
Identity	Grade, manufacturer, lot number, production date, package, and seal
Composition/character	Al₂O₃ on a stated basis, basicity, density, pH, insolubles, and agreed impurities
Safety/logistics	SDS, material compatibility, storage temperature, shelf life, unloading, and spill response
Lot quality	Current-lot CoA, test method, tolerance, retention sample, and release or quarantine
Application	Treated-water target, dose basis, final pH, floc character, separation unit, sludge, and cost

Do not compare price per kilogram without normalisation. Active Al₂O₃ dose (mg/L) = product dose (mg/L) × Al₂O₃ mass fraction. This puts active content on one basis but does not prove that basicity, speciation, impurities, or process response are equivalent.

How should jar testing and the plant trial be run?

Use representative influent and the difficult conditions that actually occur. Compare a blank, current product, and candidates under the same mixing procedure. Record product and active dose, pH, alkalinity, turbidity/TSS, colour or another target, floc size and strength, settling or flotation, and sludge volume.

Start the plant trial only when material and equipment are ready. Change one primary variable at a time, calibrate the pump at operating backpressure, and record batch, dose, flow, pH, influent/effluent quality, carryover, sludge blanket, supporting chemicals, and unit disturbances. Agree the duration and acceptance criteria before starting.

For the wider coagulation programme, compare industrial liquid PAC, PAC and ACH coagulants, and polymer flocculants. Review Watermart dosing pumps after flow, pressure, and materials are defined.

Custom PAC FAQs

Does a custom PAC always use a lower dose?

No. Product or active dose can be lower, equal, or higher depending on the water, grade, pH/alkalinity, mixing, and target. The useful comparison is total cost per cubic metre meeting every limit, not the lowest dose.

Is a jar-test result enough to change product?

Not yet. A jar test screens candidates and dose range. The plant trial still has to prove feed accuracy, mixing, floc separation, stability during influent change, sludge production, safety, and cost.

Which data should be sent to Beta?

Send influent analysis and effluent targets, flow and variation, process diagram, mixing and separation data, current product/dose, CoA/TDS/SDS, jar-test results, pump output, supporting chemicals, sludge, and cost through the PT Beta Pramesti Asia contact page.