From the DIY KZ thread
"For a 250mL solution, use 5 level tablespoons (roughly 115 grams) of CaCO3 powder and add roughly 230mL of RO/DI water. This should mix right about 250mL. The powder will NOT dissolve, it will stay suspended in the water."
"For a 250mL solution, use 5 level tablespoons (roughly 115 grams) of CaCO3 powder and add roughly 230mL of RO/DI water. This should mix right about 250mL. The powder will NOT dissolve, it will stay suspended in the water."