Still Pro 1 lb.
Still Pro 1 lb. for a Durastill Water Distiller Powder form (not a liquid) Food Grade Acid Stronger than Still Clean for cleaning extra hard minerals. It dissolves hard minerals in your boiling chamber. The more minerals you have in the chamber the more Still Clean you will need to use. Bring the boiling chamber (water) to a full boil. Unplug the distiller. Add 1/4 to 1/2 cup Still Clean. Be careful, it's HOT. Leave the lid off and wait 24 hours. After 24 hours drain the boiling chamber and rinse out the chamber with water. Repeat process if necessary. Part Number 400-402