dilutioncalculator.co.uk§ Verified 20 Jun 2026 · Reviewed by A. Hargreaves, MChem (Hons)
Dilution chart · 25 L drum
Floor-scrubber tanks, brewery cellar sanitisers and large-area contract jobs use 25 L volumes. The chart shows ml and L of concentrate at common trade ratios.
§ 125 L ready-reckoner
| Ratio | Concentrate (ml) | Water (ml) | % v/v |
|---|---|---|---|
| 1:20 | 1 190.5 | 23 809.5 | 4.76 |
| 1:32 | 757.6 | 24 242.4 | 3.03 |
| 1:40 | 609.8 | 24 390.2 | 2.44 |
| 1:64 | 384.6 | 24 615.4 | 1.54 |
| 1:100 | 247.5 | 24 752.5 | 0.99 |
| 1:128 | 193.8 | 24 806.2 | 0.78 |
| 1:200 | 124.4 | 24 875.6 | 0.50 |
| 1:256 | 97.3 | 24 902.7 | 0.39 |
| 1:500 | 49.9 | 24 950.1 | 0.20 |
Vessel: drum / scrubber tank (25000 ml).
§ 2Concentrate cost per batch
For a £24 5 L drum of Suma D2 at 1:100: each 25 L diluted batch uses 247.5 ml of concentrate. That is 247.5 ÷ 5 000 = 4.95 % of the drum, or £1.19 per 25 L of working solution.