Product Overview

• HI4000-00 is a 500 mL bottle of Ionic Strength Adjuster (ISA) solution for bromide, cadmium, chloride, copper, iodide, and silver/sulfide ion selective electrodes.

• The lot number and expiration date of Hanna ISA solutions are clearly marked on the label, and they feature an airtight, tamper-evident seal to ensure solution quality. Hanna's solution line is specially formulated, and unopened bottles have a 5-year shelf life from the date of manufacture.

• Required for halide ISE measurements

• Airtight bottle with tamper-evident seal

• Lot number and expiration date clearly marked

HI4000-00 is an Ionic Strength Adjuster (ISA) solution for bromide, cadmium, chloride, copper, iodide, and silver/sulfide ion selective electrodes (ISE). Hanna ISA solutions are formulated to fix the ionic strength of samples and standards so that they are both constant. Without the addition of ISA, ion selective electrodes will measure ion activity; the addition of ISA stabilizes the ionic strength and allows measurement as ion concentration. For some ISEs, ISA solutions are also used to adjust the pH of the solution or eliminate any potential interference from competing ions present.

• Airtight bottle with tamper-evident seal

• Ensures solution quality and freshness

• Each bottle is marked with a lot number and expiration date

• Hanna solutions are specially formulated, and unopened bottles have a 5-year shelf life from the date of manufacture

• The importance of ISA*

• Fixes the ionic activity of the solution to a constant, allowing concentration to be determined

• Adjusts the pH of the solution as required for some ISEs

• Complexes interfering ions in the sample, allowing measurement of the free ion of interest

• *If the ISA solution is used with samples, it must be used in equal proportion with the calibration standards.