Food-plant hygiene chemistry: alkaline → acid → sanitize

Step 1 is an alkaline product — PSP Powder or Klenz 12 — which strips fat and protein from lines, tanks and surfaces. Step 2 is the acid step — Acidet on stainless equipment, or Hydrosan as a peroxide-based acid sanitizing rinse — which dissolves the mineral film (milkstone) the alkaline step cannot touch. Step 3 is the sanitizer — Sypo or Tetramine 2008 — which kills what remains before production. Skipping the acid step is the most common audit failure in small Namibian dairies: milkstone builds invisibly and harbours bacteria under a surface that looks clean.

Because the plant’s resident bacteria adapt to a single active ingredient. Cernol’s standing instruction to dairies and butcheries is: run a QAC sanitizer for six months, then switch to a chlorine sanitizer or a hydrogen-peroxide sanitizer for the next six, and keep alternating. All the rotation partners — Tetramine 2008 (QAC), Sypo (chlorine), Hydrosan (peroxide) — are blended at our Windhoek factory, so the swab results stay clean without changing supplier, dosing pumps or delivery schedule.

The butchery set is: Chlordet 110 for floors and equipment washing (chlorinated, so it cleans and sanitizes in one pass), Pansolv for pots, pans and racks at 50 °C plus, Smokehouse Cleaner for baked-on smokehouse deposits, Arrest as the butchery degreaser, Robust for high-foam scrubbing of racks and surfaces, and Sypo or Tetramine 2008 as the rotating sanitizer. Meatco plants and town butcheries run essentially this list, scaled to size, with the hand-hygiene line — Chemkleen at the basins, Antisep 100 at the doors — completing the plant.

Acidet is the acid cleaner formulated for food-processing equipment, and its named role in the Cernol segmentation is cleaning stainless-steel piping and hooks before EU inspection certification. Alkaline cleaning leaves a mineral haze on stainless that reads as staining under an inspector’s torch and harbours bacteria in its matrix; the Acidet pass dissolves it and restores the bright passive surface the standard expects. Schedule it in the week before your audit window and log it — the log entry itself is evidence of a plant that understands its chemistry.