Professor Virohsa turned towards the Hufflepuff. "Sure thing. Each water tank has a red number glowing. We are looking for these PH levels to be 7. If it is lower than 7 it is acidic and if it is bigger than 7 it is basic", she explained. "Depending on these numbers open the respective valves to make sure it either rises to a 7 or declines to a 7", she added. She smiled at the hufflepuff as she pointed at the water tanks by the wall.
She then started to walk over Zekke, who was raising his hand (ooc: o_O). She peered into the pitchers and frowned. "Well, you want to add enough so that the color moves from yellow to redder than orange. Once you see the bright reddish orange, you can stop", she nodded. "Usually about 75 mg should do it", she explained.
As she explained this procedure, she kept a close eye on the poison cell. |