Product Dose from Active Strength
Worked example: 100 ppm active from a 25% product → 400 ppm product — press Try an example to run it live, then adjust anything.
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Product Dose from Active Strength explained
Almost nothing in a drum is neat. A "50% caustic" is half water, a nitrite closed-loop product may be 20% sodium nitrite, and a scale inhibitor blend might carry 8% active phosphonate with the rest as azole, polymer, dye and water. If the specification says you need 100 ppm of active nitrite and the product is 25% active, you must feed 100 × 100/25 = 400 ppm of product. Miss that and you are running at a quarter of the protection you think you have.
The trap runs in both directions and shows up on test kits. Most field kits report the active — a nitrite kit reads ppm NO₂, a molybdate kit reads ppm MoO₄ — while your feed log records product. When the two do not line up, people chase phantom leaks or overfeed. The fix is a single line at the top of the log: "target 800 ppm product = 200 ppm active nitrite." Note too that suppliers reformulate; when a drum quietly changes from 25% to 20% active, the same feed setting silently drops your residual 20%, and only the label tells you.
Product Dose from Active Strength formula
- = Product dose (%)
- = Active ingredient dose (%)
- = Active strength (%)
Missing one of these? Work it out first, then come back
- Product dose — Chemical Feed Rate from Dose, Chemical Feed Rate (lb/day = mg/L × MGD × 8.34)
- Active ingredient dose — Pounds of Active Chemical in a Tank, Chemical Feed Rate from Dose
- Active strength — Pounds of Active Chemical in a Tank, Acid Feed to Reduce Alkalinity