Advanced Coffee Making

0 of 81 lessons complete (0%)

Refraction Action

ACM 6.02 – Cleaning & Calibration


Be sure to remove the rubber protective layer and clean it regularly. The crystal must be kept clean too. You can use alcohol swabs for this purpose, or isopropyl alcohol. If you can’t obtain these products, deionised water should be sufficient. Avoid any abrasive material, though the crystal is super tough so it won’t be scratched by a paper towel.


We recommend you keep your cleaning solution,