Read the contents, not just the label#
Purity describes the water component's share of the liquid. A bottle's label can disagree with its contents, so use a fresh measurement when deciding what to mix.
A used test strip records a past sample. Changing a container's contents does not turn that old result into a new measurement.
Grade reference#
These inclusive thresholds follow the linked community analysis. The calculator's grade is based on the numbers entered; a displayed reading near a boundary may not reveal the game's hidden precision. Below 35%, the source does not establish one ordinary saleable grade.
| Minimum purity | Grade |
|---|---|
| 99.9% | Pure Water |
| 99% | High-Quality Water |
| 98% | Basewater |
| 96% | Ghostwater |
| 90% | Rustwater |
| 35% | Gutterflow |
| Below 35% | Unclassified in this reference |
When the mixing calculation applies#
For ordinary water transferred without filtering or reactions, use a volume-weighted average. Enter the amount actually transferred and leave enough space in the receiving container.
A filter or an active reagent can change what arrives. Those actions need processing rules and are outside the direct-mixing calculator.
Displayed precision has limits#
The official 1.0.0.5 note changed liquid-volume displays to truncate at 0.01 mL. It does not establish the same display rule for purity percentages. Leave a margin around grade thresholds and measure the mixed water again.