Lugol's diluted 1:100 working solution (1 ml Lugol's to 100 ml) dosing calculator

Lugol's diluted 1:100 working solution (1 ml Lugol's to 100 ml)

iodine

I2 + KI in water

Partly derived

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What one dose does

PARAMETER

1 ml / 100 L

Iodine

+0.0142 ppm

To raise iodine by 0.02 ppm in 100 L: 1.4 ml.

How it’s used

1 ml Lugol's (142.5 mg I) + RO/DI to 100 ml -> 1.425 mg I/ml; 1 ml in 100 L adds 14.25 ug/L. Make fresh; I2 slowly volatilizes. perMlEffects shown are for the DILUTED solution.

Cautions

• One drop in 100 L roughly equals the entire natural iodine content (~60 ug/L); dilute 1:100 in RO/DI before dosing.

• Elemental I2 is more toxic/oxidizing than iodide; dose diluted into high flow away from livestock.

• Test-driven only; skip if iodine already >= ~0.06 ppm.

• Stains skin/surfaces; corrosive to metals; keep from children.

Sources

reef2reef.com/threads/k-sr-and-i.382812/