# Coffee water drops calculator

> How many drops of mineral concentrate to add for a target ppm — for APAX, Aquacode and other coffee water drops.

Source: https://cuplift.app/tools/water-drops-calculator

## Drops for 500ml

At 20 drops per ml, into distilled or reverse-osmosis water.

| Product (500ml water) | 80 ppm | 100 ppm | 150 ppm |
| --- | --- | --- | --- |
| APAX Jamm | 17 drops | 21 drops | 32 drops |
| APAX Konflux | 22 drops | 27 drops | 41 drops |
| APAX Lylac | 15 drops | 19 drops | 28 drops |
| APAX Tonik | 16 drops | 20 drops | 30 drops |
| Aquacode | 38 drops | 48 drops | 72 drops |
| Lotus Calcium | 8 drops | 10 drops | 15 drops |
| Lotus Magnesium | 9 drops | 12 drops | 18 drops |
| Lotus Potassium | 9 drops | 11 drops | 17 drops |
| Lotus Sodium | 11 drops | 13 drops | 20 drops |
| TWW Classic | 30 drops | 38 drops | 56 drops |
| TWW Medium | 80 drops | 100 drops | 150 drops |

## How it works

Mineral drops are concentrates: each one adds a known amount of dissolved minerals to your water, measured in ppm (parts per million). The calculator assumes a standard glass dropper at 20 drops per ml, starting from distilled or reverse-osmosis water with nothing in it.

Droppers vary. If you have a TDS meter, measure what a few drops actually give you — Cuplift lets you calibrate each product so its recipes use your real numbers.

## What ppm should I brew with?

Most filter recipes sit somewhere between 80 and 150 ppm. More minerals extract harder and give the cup more weight; fewer extract more gently and read cleaner and brighter. If your coffee tastes [salty or metallic](https://cuplift.app/fix/salty-coffee), the water is the first thing to bring down. [What each mineral does](https://cuplift.app/water-for-coffee) explains the difference between the products.