HI-4015-00 SAOB (sulphide antioxidant buffer)
HI-4015-00 SAOB (sulphide antioxidant buffer)

HI-7111/P LiCl Calibration Salt for Relative Humidity, 6 x 15g bottles
HI-7858/5 5m extension cable with female BNC connectors
HI-8086L 23g/L Sodium (Na+) ISE Standard Solution, 500ml FDA bottle
Hanna ISA solutions are formulated to fix the ionic strength of a sample and standards. Without addition of ISA, an Ion Selective Electrode measures ion activity. Addition of ISA stabilises the ionic strength and permits measurements as ion concentration. With some ISEs, the ISA solution is also used to adjust the solution’s pH or to remove any potential interference from competing ions present.