Standard Solution Nitrate, 40 mg/l NO₃ = 9.0 mg/l N

Standard solutions are solutions with a defined concentration and are provided to check the operation methods and devices of the cuvette tests as well as the condition of the instrument.

Note according to EU regulation 2019/1148
This product is regulated by Regulation (EU) 2019/1148: all suspicious transactions, and significant disappearances and thefts should be reported to the relevant national contact point. See https://ec.europa.eu/info/index_en