GroLine 5000 uS/cm Conductivity Standard Sachets, 20 mL (25 pcs.)

HI70039G is a premium quality 5000 µS/cm conductivity solution standardized with a conductivity meter that has been calibrated with potassium chloride NIST 2202 SRM (Standard Reference Material) in deionized water for analytical use in accordance with ISO 3696/BS3978. Additional equipment used in preparation of the solutions include certified weight-checked balances, Class A glassware and certified thermometers. Each sealed sachet holds just the right amount of solution making every sachet as fresh as the day it was packaged! Solution does not contain any dyes that may stain the reference cell of a pH electrode. Light block foil packaging Light-tight packet helps to prevent against degradation by UV light. One-time use sachet packets Ensures quality and freshness of solution. Each sachet marked with lot number and expiration date Many Hanna solutions are specially formulated to have an expiration of 5 years from manufacture for an unopened sachet.