Ammonium, nitrate, and total nitrogen Hach cuvette tests meet the stringent requirements of ISO standards


We are very pleased to announce that our LCK cuvette tests for ammonium, nitrate, and total nitrogen are now official ISO standard methods. This further increases the already high level of acceptance of Hach® cuvette tests worldwide. It also simplifies the process to include the relevant procedures in the scope of accredited laboratories.


ISO is the International Organisation for Standardisation. It is a global federation with more than 160 member states that develops international standards, for example for quality management systems, technologies, scientific and analytical testing processes and many more. Such ISO norms standardise processes and procedures and thus contribute to improving the quality and safety of goods and services.


Find the right cuvette test below.


Find the right Hach nitrogen and COD cuvette test for your application that fulfills ISO requirements:

Ammonium
 Nitrate
 Total Nitrogen
 COD*
ISO 23695
 ISO 23696
 ISO 23697
 ISO 15705
LCK302 (47 - 130 mg/L NH4-N) LCK339 (0,23 - 13,5 mg/L NO3-N) LCK138 (1 - 16 mg/L TN) LCI400 (0 - 1000 mg/L O2)
LCK303 (2 - 47 mg/L NH4-N) LCK340 (5 - 35 mg/L NO3-N) LCK238 (5 - 40 mg/L TN) LCI500 (0 - 150 mg/L O2)
LCK304 (0,015 - 2 mg/L NH4-N) LCK540 (15 - 150 mg/L NO3-N) LCK338 (20 - 100 mg/L TN) APC400 (0 - 1000 mg/L O2)
LCK305 (1 - 12 mg/L NH4-N) APC339 (0,23 - 13,5 mg/L NO3-N) LCK438 (100 - 250 mg/L TN) APC500 (0 - 150 mg/L O2)
LCK502 (100 - 1800 mg/L NH4-N) APC340 (5 - 35 mg/L NO3-N) APC138 (1 - 16 mg/L TN) -
LCK503 (10 - 100 mg/L NH4-N)) - APC238 (5 - 40 mg/L TN) -
LCK504 (0,005 - 0,05 mg/L NH4-N) - APC338 (20 - 100 mg/L TN) -
LCK505 (0,5 - 5 mg/L NH4-N) - - -
APC303 (2 - 47 mg/L NH4-N) - - -
APC304 (0,015 - 2 mg/L NH4-N) - - -

APC cuvette tests can only be used in conjunction with the AP3900 Laboratory Robot.

* Hach LCI400, LCI500, APC400 and APC500 are unique. Using the original ISO 15705 formulation they follow exactly the ISO 15705 for COD.

LCK Cuvette tests systems - Benefits for download.