Work out lab consumable cost instantly with clear inputs, formula shown and shareable results.
Consumable budgets scale with throughput and must include wastage. Eight runs of 96 samples at 4.20 each is 768 samples and 3225.60 a month, of which 345.60 is wastage at 12% - so 38,707 a year. Wastage is routinely omitted from grant applications, and it is exactly the line that overspends.
Monthly cost
cost = samples per month x cost per sample x (1 + wastage)
Samples per month
samples = samples per run x runs per month
Ten to fifteen percent for established assays, considerably more during method development where repeats are frequent.
Often, because a 96-well plate must be run whole. Processing 40 samples on a 96-well plate wastes over half the reagent.