Work out milk fat and snf instantly with clear inputs, formula shown and shareable results.
Solids-not-fat is estimated from the corrected lactometer reading and fat percentage using the ISI formula SNF = CLR/4 + 0.21 x fat + 0.36. Total solids is SNF plus fat. Converting percentages to kilograms through volume and density gives the payable solids in a consignment.
SNF from lactometer
SNF % = CLR / 4 + 0.21 x fat % + 0.36
Total solids
TS % = SNF % + fat %; solids mass = volume x density x % / 100
Milk composition standards are legally defined. Persistent low SNF or fat may indicate adulteration and should be confirmed by an accredited laboratory before any commercial action.
The lactometer reading adjusted to the calibration temperature, usually 27 C, by adding 0.2 per degree above and subtracting 0.2 per degree below.
Cow milk typically 8.3-8.7% SNF with 3.5-4.5% fat; buffalo milk 9.0-9.5% SNF with 6-8% fat. SNF below the legal standard suggests added water.