Aqua Master Calibration Solution EC1413 20ml SachetDescription Aqua Master Calibration Solution EC1413 20ml Sachet: This is a 20ml EC 1413 calibration solution. Every box comes with 25 packets, each containing 20ml of solution. The solution is traceable to the NIST standard and should ideally be stored in a temperature range of 59 77F. The liquid is not meant to be reused. Specifications Product Name: EACH UPC Code: 8785278524633 Quantity: 1 Weight: Width: 7. 48 in. Height: 3. 35 in. Length: 5. 91 in.