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Over-Mix Correction

A batch was mixed too strong, or too weak. Work out how much water or concentrate brings it back to the label strength, and what the mistake was worth.

Inputs

Range: 1–512

Parts of water per part of concentrate, as printed on the label.

The correction depends on which reading of the label the batch was mixed to. "1:64 solution" and "1 oz per 64 oz of water" are different strengths.

Range: 0–1,000 fl oz

Fluid ounces of concentrate already poured into the batch.

Range: 0.01–100,000 fl oz

Concentrate plus the water already added.

Range: 0–1,000,000 per gallon

Enter the current purchase price in US dollars for the unit shown.

Result

Concentrate to add to correct the batch
0.00 fl oz
Batch volume at the label strength
256.00 fl oz
Current dilution of the batch
31.00 : 1
Excess concentrate in the batch
2.00 fl oz
Value of the excess concentrate
$0.28
Water to add to correct the batch
128.00 fl oz
Reading: what this result means for the job
The batch is stronger than the label. Add the water below to bring it to strength, and check the batch has not already been used on a floor before it is corrected.
Applicability limit
The correction assumes the batch has not been applied and the concentrate is still in solution. Once a batch has been used on a surface, no amount of arithmetic corrects it, and a corrected batch is still a batch that was mis-measured: find the cause rather than fixing the symptom. This is a planning figure for the values entered, not a measured result. Coverage rates, product yields and application rates are properties of a specific product, applicator and substrate, and the label or data sheet for the product you are using always takes precedence over the default here. The EPA-registered label governs. Using a registered antimicrobial inconsistently with its labeling is unlawful under 7 U.S.C. 136j(a)(2)(G), and 40 CFR 156.10(i)(2)(ii) requires every label to carry that statement. This tool does arithmetic; it does not approve a dilution, and it does not determine compliance.
Check before the job

Working

Current dilution of the batch
—
Batch volume at the label strength
—
Water to add to correct the batch
—
Concentrate to add to correct the batch
—
Excess concentrate in the batch
—
Value of the excess concentrate
—

What to check

  • Check the batch has not been applied to a surface before using it.
  • Measure what was actually poured rather than what was intended.
  • Confirm the label strength before adding water, since more water reduces the strength but not the surfactant load.

Related calculators

A corrected batch is usable only if the error was small and the solution has not already been used on a surface. Once a batch has been applied, no amount of arithmetic brings it back, and this tool is for the mixing room, not for the floor. The correction depends on how the label states its ratio, so the convention is an input here too.