EDT direction produce a wide range of stock standards to ensure that ISE calibration is both simple, accurate saving valuable time in a busy laboratory.  

All of our stock standards are 1000ppm and are supplied in 500ml leak proof bottles. It is anticipated that the end user will prepare standard sets by serial dilution of this stock standard as required.

Please ensure that lower concentration standards (typically below 10ppm) are not kept for future work as this gives cause to potential errors as concentration of these may be affected significantly during storage.

As these standards are used for ion analysis it is important that all standards are diluted using distilled or deionised water. Tap water or softened water cannot be used due to their high ionic content. For successful analysis most applications will require an ISAB (Ionic strength Adjustment Buffer).

All glassware should be clean. If glassware has been washed in tap water or in a glassware washing machine  it will need to be rinsed in deionised water prior to use. Residual water causes unwanted dilution so thoroughly dry glassware prior to use.

Be careful to avoid touching the insides of glassware or containers which are used for measurement if possible. The most common contaminants are Sodium and Chloride from sweat and in some applications this may not be desirable. It is advisable to prepare two standards which should have concentrations that span the expected sample concentration. e.g. a typical Nitrate in water analysis may yield a result of 40ppm . The standards should therefore be 100 and 10ppm made from two serial dilutions from the 100ppm stock.


Thumb File information
ISE Standards Brochure.pdf 1.79MB 392
Commodity Code 38220000
Diameter 75mm
Filled Weight 510g
Graduations 50ml
Height 170mm
Inner Seal Yes. Transportable.
Material Polypropylene (PP)
Volume 500ml

Write a review

Note: HTML is not translated!
    Bad           Good

Nitrate Standard Solution 1000ppm (500ml)

  • £15.00

Related Products

Nitrate Combination ISE

Nitrate Combination ISE

Here are some of the benefits of using EDT directION combination Ion Selective Electrodes:Rugged Sol..


Nitrate Half Cell ISE

Nitrate Half Cell ISE

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


Direct Readout Bench pH/Ion Meter & Accessories

Direct Readout Bench pH/Ion Meter & Accessories

The DR359Tx is a straightforward Ion Meter with the ability to measure Ion concentration using up to..


Nitrate Flow Plus Filling Solution 30ml

Nitrate Flow Plus Filling Solution 30ml

Filling solution for use with the 5021 Nitrate Flowplus ISE.Solution supplied in a 30ml bottle ..


Nitrate Mini ISE

Nitrate Mini ISE

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


We deliver to all countries worldwide

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