Product portfolio

SEMIKI measurement solution

Electronic industry measuring machine

Force and mechanical measuring equipment

Measuring equipment for mechanical industry

Temperature and humidity measuring device

Optical measuring equipment

Lab equipment

ISA Solution for High Salinity ISE Electrode HI7090L

SKU: HANNA-HI7090L Category: Hanna experimental measuring equipment

– Required when using FC300B electrode if measuring high salinity range.

– Used to adjust ionic strength for samples and standard solutions.

– Maintains constant ion strength and eliminates interference when measuring Na or NaCl.

– Important when measuring sodium at high concentrations.

The Importance of ISA*

– Fix the ion activity in the solution to be able to determine the exact concentration.

– Adjusting the pH of the solution is necessary for some ISEs

– Complexes interfere with ions in a sample to allow measurement of free ions

*MUST ADD ISA solution into sample and solution standard in proportion equal.

HI7090L
Uses	– HI7090L is an ionic strength adjuster (ISA) solution for use with sodium ion selective electrodes (ISEs). Hanna ISA solutions fix the ionic strength of samples and standards so that both remain constant. – Without the addition of this ISA solution, an ion selective electrode will measure ion activity; therefore, ISA stabilizes the ionic strength and allows measurement as ion concentration. With some ISE electrodes, ISA solution is also used to adjust the pH of the solution or to remove interfering complexes of ions in a sample to allow measurement of free ions. – Used for high scale.
Specifications	– 500mL plastic bottle green label – Colorless solution
Using	– Fix the ion activity in the solution to be able to determine the exact concentration. – Adjusting the pH of the solution is necessary for some ISEs – Complexes interfere with ions in a sample to allow measurement of free ions *MUST ADD ISA solution into sample and solution standard in proportion equal.
Methods of preservation	– After use, cover and store at room temperature, away from direct sunlight – Do not dilute or add any chemicals to the solution. – Always use fresh solution for each use. – ABSOLUTELY do not pour used solution back into the bottle.
Use for	– ISE NaCl meter HI931100, HI931101, HI931102 – ISE Sodium/NaCl Electrode FC300B
Certificate of Analysis (COA)	Are not
MSDS	Have
Guarantee	Are not