Chemistry

Bleach Dilution Calculator

Find bleach to add for a target ppm.

Calculated Output

Bleach to add (mL) 2.424

Water to add (mL) 997.58

Formula: C₁V₁ = C₂V₂ (stock % = % × 10,000 ppm)

Step-by-Step Breakdown

1. Values used:

2. Bleach strength = 8.25 %

3. Target concentration = 200 ppm

4. Final volume = 1,000 mL

6. Bleach to add = 2.424mL

7. Water to add = 997.58mL

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The math behind it

Convert bleach % to ppm (×10,000), then C₁V₁ = C₂V₂: bleach volume = target ppm × final volume ÷ stock ppm.

8.25% bleach to 200 ppm in 1 L → ~2.4 mL bleach.

Sanitizing strength?

Food-contact surfaces often use ~100–200 ppm.