GIFSQ Tools · Module 18 — Manufacturing, Costing & Supply Chain · Tool 344 of 500
Check a production run at a glance: yield, loss and scrap from the material in and the good product out — the three numbers every shift report needs.
Try sample values — fills the form with the worked example below.
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Yield (%)
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Total loss (%)
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Scrap (%)
Equation: Yield (%) = good output ÷ material in × 100. Total loss (%) = (material in − good output) ÷ material in × 100. Scrap (%) = scrap ÷ material in × 100.
Method: Mass-balance yield: what went in, what came out as saleable product, and what was weighed as scrap. The gap between total loss and scrap is unweighed loss — evaporation, dust, spills and line hold-up.
Assumptions: material in and good output are in the same unit and weighed on the same basis (both wet, or both dry); scrap is a weighed figure, not an estimate.
Limitations: yield says nothing about quality — a batch can yield well and still fail specification; moisture change during processing shifts the balance, so compare like with like.
Rounding: percentages to 2 decimal places; intermediates unrounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Method: Mass-balance yield: what went in, what came out as saleable product, and what was weighed as scrap. The gap between total loss and scrap is unweighed loss — evaporation, dust, spills and line hold-up.
Assumptions: material in and good output are in the same unit and weighed on the same basis (both wet, or both dry); scrap is a weighed figure, not an estimate.
Limitations: yield says nothing about quality — a batch can yield well and still fail specification; moisture change during processing shifts the balance, so compare like with like.
Rounding: percentages to 2 decimal places; intermediates unrounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Worked example: Material in 1,000 kg, good product 920 kg, scrap 50 kg: yield = 92.00%; total loss = 8.00%; scrap = 5.00% — the other 3.00% is unweighed loss.
Enter values above to see results.
Track yield by product and by shift: a slow drift down is usually a process problem, not a weighing error. Tool 344 of 500 — GIFSQ
