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Water Chlorine Adjustment Calculator

Water Chlorine Adjustment Calculator: calculate required available chlorine kg with consistent units and explicit assumptions.

Inputs

m³
mg/L
mg/L
wt%
kg/L
mg/L

Results

Product mass
1.6 kg
Product volume
1.333333 L
Available chlorine
0.2 kg

⚠ Stoichiometric estimate only. Measure residual after contact time; demand, decay and pH affect actual dosing. If initial exceeds target, dosing cannot reduce chlorine.

Formula

Required available chlorine kg = water m³ × dose mg/L / 1000

Product kg = chlorine kg / available-chlorine mass fraction

Residual blending uses conservation of chlorine before decay.

Assumptions & limits

  • Available-chlorine presets use chlorine-equivalent mass. Chemical-assay presets convert NaOCl × 70.906/74.442 or Ca(OCl)₂ × 141.812/142.98. Confirm supplier label basis.
  • Not a potable-water safety recommendation; follow local treatment requirements and measure actual residual.

Worked example

For the example inputs: Product mass = 1.6 kg; Product volume = 1.333333 L; Available chlorine = 0.2 kg.

Required available chlorine kg = water m³ × dose mg/L / 1000

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