2026-10-15 · Professional procurement

PAC and PAM Samples for Raw Water: Order a Paired Trial

Specify separate coagulant and polymer identities, addition sequence and comparison controls when ordering a professional raw-water treatment trial.

A paired PAC and PAM sample order should help a professional operator evaluate two distinct treatment functions, not assume that the products are interchangeable. The coagulant program and the polymer aid must be tested as an integrated sequence. Asking only for the strongest flocculant can leave the underlying coagulation conditions unresolved.

Describe the incoming water and equipment

Provide representative turbidity, pH, alkalinity, temperature and relevant source-water information. State the available mixing and separation steps and the intended outlet use. A settling plant, flotation process and direct-filtration system do not necessarily need the same trial method. Identify any upstream chemicals already present in the sample.

Ask the laboratory to define the control conditions. These may include untreated water, the incumbent coagulant program and the proposed coagulant with and without polymer aid. Comparing only complete packages makes it difficult to tell which change produced the result or whether one component is unnecessary.

Keep product identities separate

Request labelled samples, preparation instructions and technical documents for both products. Record dose units independently; do not combine commercial PAC and active PAM quantities into one unexplained number. Confirm the actual addition sequence and contact times used in each test.

The Xinqi product range can support a coagulant-and-polymer enquiry. A related PAM supply reference helps frame polymer questions, but neither establishes that the two proposed products have been validated together on the buyer's water. Any potable application requires its own product-approval review before use.

Evaluate the full separation result

Record clarified-water quality, solids formation, sludge withdrawal and relevant downstream behavior. Clear supernatant with unmanageable sludge is not an adequate procurement result. Keep the test conditions consistent and retain unsuccessful combinations so the operating window is visible rather than presenting only the best photograph.

Release a package with defined responsibilities

State whether one supplier is responsible for reviewing compatibility or whether the buyer coordinates separate suppliers. Include the selected identities, preparation methods, trial scope and unresolved conditions in the initial order. A paired sample exercise should produce a documented treatment sequence, not a prescription for household chemical addition. Homeowners should address drinking-water concerns through suitable testing, approved household equipment and their water provider rather than attempting a PAC/PAM process themselves.

Connect the purchase to the water question

For background, read How Water Clarity Connects Home Habits and Industrial Treatment. Professional buyers can send the application, required evidence and planned quantity through the Xinqi product enquiry; household readers should use the domestic guidance rather than request industrial chemicals.