Does anyone have a detailed method for calculating the dosing of sodium metabisulfite to water for the removal of dissolved oxygen. I'm trying to figure out a ratio for a hydrogeochemical pilot test, and want to make sure I'm doing it correctly (based on temperature, in particular). Most of the methods I've found only provide information for boiler environments (involving hot water), which is the opposite of what I need. My water temperature range is between 23-32 degrees C (about 73-89 degrees F) Thanks!