GAK 1400 is a practical working and calibration set for all pH meters, designed to support routine calibration, electrode care, and maintenance. It provides a complete set for pH calibration and maintenance and includes the key accessories needed for preparing buffer solutions, cleaning electrodes, and maintaining proper electrode condition. The set contains 5 buffer capsules each for pH 4.0, pH 7.0, and pH 10.0, 3 x GPF 100 bottles (labeled with stickers), 1 x KCL 3M electrolyte, and 1 x GRL 100 cleaning solution. GAK 1400 is a convenient solution for laboratory, service, and field use.