Replenishment rate
This universal calculator draws from NordicLab's shared chemistry catalog and covers the common case: a fixed-fraction fresh mix, scaled to your target volume, plus published replenishment rates for professional minilab chemistry. It does not (yet) cover push/pull interpolation or mutually-recalculating volume/mass fields. Weight mode is only offered for a component when the source actually publishes that component's density; NordicLab never assumes a default density (not even 1.00 g/mL for water-like concentrates) — enter your own measured density to compute a mass for an otherwise volume-only component; that value is used only for this calculation, is never saved, and is never treated as manufacturer data.
| Stage | Time | Temperature |
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Sound cues: a rising tone marks the start of a new stage; two beeps warn at 10s left in a stage, three sharper beeps at 5s left, so you know when to pour off without watching the clock. Click "Start here" on any row to (re)start the timer from that stage. Keep this tab active and your device unmuted — this runs entirely in the browser, no audio files or app required. This universal timer draws from NordicLab's shared chemistry catalog; for a kit's full write-up (hazard data, mixing calculator, SDS mirrors), see its own dedicated article if one exists.