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HomeProductsProduct categoriesAccessoriesCalibration/testing/maintenance > Standard solutions for analyzers

Standard solutions for TresCon® analyzers

WTW accessories standard solutions for analyzers

Standard solutoins for the automatic calibration of the NH4, NO3, NO2, PO4 and total phosphorus TresCon® modules. For highly precise and reliable measuring values

  • The right standard for every parameter
  • For continuous highly precise measuring results
  • Proven WTW quality

In order to ensure the highest measurement accuracy during operation of wet chemical analyzers, a regular calibration with standards is required. The TresCon analyzer system is therefore equipped with an automatic calibration function. WTW offers the matching calibration standard for every parameter.


Model Description Order no.
S/ AI - A111 1.5 Liter standard solution 1 mg/l NH4-N 821100
S/ AII - A111 1.5 Liter standard solution 5 mg/l NH4-N 821101
S/ BI - A111 1.5 Liter standard solution 10 mg/I NH4-N 821102
S/ BII - A111 1.5 Liter standard solution 50 mg/I NH4-N 821103
S/ AI - N 211 10 Liter standard solution, zero standard NO3-N 821112
SSet/ N211 Set standard solution (NO3-N) 4x 1.5 l 821113
S/ B - N511 1.5 Liter standard solution 0,4 mg/I NO2-N 821117
S/ BI - P211 1.5 Liter standard solution 1,6 mg/I PO4-P 821121
S/ BII - P211 1.5 Liter standard solution 8 mg/I PO4-P 821122
S/ BIII - P211 1.5 Liter standard solution 20 mg/I PO4-P 821123

Technical Data

Matching and supplemental products

  • Analyzer for ammonium
  • Analyzer for nitrate
  • Analyzer for nitrate/SAC
  • Analyzer for nitrite
  • Analyzer for orthophosphate
  • Analyzer for total phosphorus



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