ASDOMO PH 7.00 Meter Buffer Solution Powder Set For Quick and Easy PH Calibration 8 PCS by Asdomo

商品説明

PH buffer solutions: PH 7.00;Simple to use. Just add 250ml per powder packet;Each pack volume: 250 ml. Each powder packet/sachet makes 250ml of solution (when mixed with distilled or deionized water);The calibration solution can be reused if it is not contaminated and its shelf life is about six months after watered.;Package include 2 PCS ph buffer powder