Groline PH 4 & 7 Calibration Buffer Sachets

£19.99

Groline is a premium quality pH 4.01 & 7.01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Ideal for use with the Groline PH Tester, containing 5x sachets 20 mL of each buffer (4.07 & 7.01).