PAC Powder vs Liquid: Which Form is Best for Your ETP?

Powder PAC contains 28–30% Al2O3 equivalent, requiring dissolution in water before dosing — typically 5–10% stock solution.

Liquid PAC contains 10–18% Al2O3 and is ready to dose directly from storage tanks via metering pumps.

Both forms have similar coagulation mechanisms; performance difference at equivalent Al2O3 dose is negligible in jar tests.

Liquid PAC has higher freight cost per unit Al2O3 due to water content; powder PAC is more concentrated for long-distance transport.

Liquid PAC suits plants with existing HDPE/FRP storage tanks and automated dosing pumps — minimal preparation labour.

Powder PAC suits plants with limited tank space, remote locations or where tanker delivery of liquid PAC is impractical.

Powder requires dissolution tank and agitator — factor in capital cost and daily preparation time (30–60 minutes for batch dissolution).

Liquid PAC degrades slowly over months; powder PAC has longer shelf life if stored dry but cakes if exposed to moisture.

Compare cost on Al2O3 basis, not per-kg price — liquid PAC appears cheaper per kg but contains 60–70% water.

Include dissolution labour, energy and equipment maintenance when calculating total cost of ownership for powder PAC.

For consumption above 500 kg/day Al2O3 equivalent, liquid PAC tanker delivery from a nearby supplier is usually most economical.

Source both forms from a supplier offering consistent basicity, batch COA and technical support for dissolution and dosing optimisation.

Drashti Chemicals stocks related industrial chemicals from Vadsar with batch COA, MSDS and GST invoicing (24AGLPC6288M1ZX). We are a supplier/stockist — share grade and quantity for a documented bulk quote. No public list prices.