dilutioncalculator.co.uk§ Verified 20 Jun 2026 · Reviewed by A. Hargreaves, MChem (Hons)
Dilution chart · 5 L bucket
Most trade-kitchen and surface-disinfection dosing happens in a 5 L bucket. The chart gives ml of concentrate, ml of water, and % v/v across the common ratios.
§ 15 L ready-reckoner
| Ratio | Concentrate (ml) | Water (ml) | % v/v |
|---|---|---|---|
| 1:8 | 555.6 | 4 444.4 | 11.11 |
| 1:10 | 454.5 | 4 545.5 | 9.09 |
| 1:16 | 294.1 | 4 705.9 | 5.88 |
| 1:20 | 238.1 | 4 761.9 | 4.76 |
| 1:32 | 151.5 | 4 848.5 | 3.03 |
| 1:40 | 122.0 | 4 878.0 | 2.44 |
| 1:64 | 76.9 | 4 923.1 | 1.54 |
| 1:100 | 49.5 | 4 950.5 | 0.99 |
| 1:128 | 38.8 | 4 961.2 | 0.78 |
| 1:200 | 24.9 | 4 975.1 | 0.50 |
| 1:256 | 19.5 | 4 980.5 | 0.39 |
Vessel: mop bucket (5000 ml).
§ 2Scaling 1:100 from 5 L to 25 L
Multiply concentrate by five. 49.5 ml in a 5 L bucket becomes 247.5 ml in a 25 L drum. The ratio (1:100) and the % v/v (0.99 %) do not change.