EDT directION manufacture a full range of standards, filling solutions and Ionic Strength Adjustment Buffers (ISABs). All ISE measurements require calibration using typically two standards plus the addition of an ISAB. Details of the type and concentration of standards and ISABs can be found in both the ISE instruction manual or the Application sheet where published.

Ionic Strength Adjustment Buffers (ISAB) are required for accurate Ion analysis using Ion Selective Electrodes (ISEs). The EDT Ammonium ISAB has been specially formulated to allow the buffering of all samples and standards to the same Ionic Strength without interfering with the Ammonium measurement. The Ammonium ISAB comes in 500ml leak-proof bottles with an inner seal. Typical addition is 2ml of ISAB to every 100ml of standard and sample.

The ionic strength of standards and samples are not the same thereby the ability of ions to freely move around varies from sample to sample. This means that the effective activity of ions will vary between these solutions. ISEs measure activity as they can only sense ions that come into contact with the sensor surface. To ensure all ions have an equal probability of contacting the ISE the total Ionic Strength of all solutions should be equal (or as close as possible). This is achieved by adding a small volume of ISAB (Ionic Strength Adjustment Buffer) to a fixed volume of all standards and samples.

Each ISAB is carefully selected for each different ISE to ensure that the added ions do not interfere with the measurement but do have sufficient concentration to increase the overall Ionic strength to the desired level without diluting the solutions significantly.

Application methods from EDT directION are available.

Specialist ISABs can also be used to equalize pH or remove interferents as required. For advice on these applications please contact our technical support team sales@edt.co.uk.

Thumb File information
MSDS Ammonium ISAB__30334.pdf 1.36MB 822
ISAB Brochure.pdf 1.78MB 730
Diameter 67mm
Filled Weight 510g
Height 195mm
Material HDPE (High Density Poly Ethylene)
Tamper Proof Cap Yes
Volume 500ml

Write a review

Note: HTML is not translated!
    Bad           Good

Ammonium Ionic Strength Adjustment Buffer (ISAB) 500ml

  • £27.00

Related Products

Ammonium Combination ISE

Ammonium Combination ISE

Here are some of the main benefits of using EDT direction Combination Ion Selective Electrodes:Rugge..


Ammonium Half Cell ISE

Ammonium Half Cell ISE

The EDT directION Ammonium Half Cell ion selective electrode has a solid state PVC polymer membrane...


Ammonium 1000ppm Standard Solution 500ml

Ammonium 1000ppm Standard Solution 500ml

EDT directION produce a wide range of stock standards to ensure that ISE calibration is both simple,..


Ammonium Mini ISE

Ammonium Mini ISE

EDT directION mini Ion selective electrodes are rugged solid state sensors that can be used inconjun..


Tags: Solution, ISAB, Ammonium

We deliver to all countries worldwide

For International orders call our sales hotline on +44 (0) 1304 829960