Jar-Test Dose Calculator
Translate a representative 500 mL or 1,000 mL jar test into a starting dose and an estimated prepared-solution feed rate.
Use a generic label if the product name is confidential.
Calculated jar-test dose— ppm
% concentration × mL added × 20Used only to estimate tank life.
Prepared-solution GPH = (mL added ÷ beaker mL) × plant GPM × 60. Gallons/day = GPH × 24. MGD is converted to GPM.
Enter a stock concentration and volume added greater than zero.
Your starting estimate
Jar-test dose—
Prepared solution—
Prepared solution/day—
Estimated tank life—
Flow used—
Jar setup—
Important: These are starting estimates based on a representative jar test and ideal proportional scaling, not guaranteed treatment results. Actual performance and pump calibration vary with wastewater conditions, chemical density, mixing, pH, temperature, and equipment. Verify onsite before changing a treatment program. Do not enter confidential process data.
Want a copy or help reviewing your results?Leave your email. We’ll only contact you about your jar-test results—no spam. This form is optional and does not affect calculator access.Printable Jar Testing Data Sheet →