Environmental Analysis Ready to use Water Chemistry Reagents and Standards

Precision stabilised reagents and standards were developed in 2003. These ready to use reagents were the first commercial reagents to be used in discrete water chemistry analysers in the world that provided stability for twelve months.

The ideal solution to environment analysis

  • Off the shelf convenience
  • Shelf-life stability minimum of 12 months
  • Automated reading of the bar code label for reagent identification and on-board stability delivers speed and efficiency

Innovation of precision reagents

Precision® stabilised reagents and standards were developed in 2003. These ready to use reagents were the first commercial reagents to be used in discrete water chemistry analysers in the world that provided stability for twelve months.

Serosep pioneered the introduction of fully automated Water Chemistry Discrete Analysers in Ireland in 1999. As many laboratories began to avail of the new automation they still were burdened with the tedious task of manufacturing, quality control and testing of their in house water chemistry reagents.

In 2003 Serosep launched precision range of water chemistry reagents and standards. The new range of ready to use, quality controlled and tested reagents offered Environmental Laboratories improved efficiency and convenience.

The use of Precision® Reagents and Standards will allow for increased productivity and efficiency increasing quality and confidence. This is cost effective method complying with GLP regulations.

Environmental team

Stabilised Water Chemistry Reagants and Standards

Benefits of Precision® Reagents and Standards

  • Ready to use – allowing full automation
  • Standardised Reagents Formulations (Elimination of errors)
  • Quality Certificates for each batch
  • Convenient Pack Sizes
  • Reagents and standards are stable for 12 months (Enhanced Stability v’s Manual Preparation)
  • Barcoded – easy transfer of vital information
  • Manufactured under ISO 9001 : 2008
  • Reagents are ISO15923-1 compliant
  • Transfer of vital information complying with GLP regulations
  • Reagent Identification
  • Reagent Volume
  • Expiry Date
  • Lot Number

Precision Product Range

Precision Ready to Use Reagents are manufactured, packaged and stored in controlled refrigeration on site in Limerick, Ireland allowing for a high-speed turnaround time on orders placed, orders received before 1.00pm are despatched next day, providing an excellent service to our many customers.

Serosep practices and efficiencies allow us to offer a competitive price to our direct customers in Ireland and our distribution network worldwide.

To provide the ‘complete package solution’ to colorimetric nutrient analysis, Serosep supply Calibration Standards.

We supply single component 1000mg/l in either 100ml or 500ml sizes with ISO/IEC 17025 accreditation.

Alternatively, we can also supply further ISO 17034 accredited Standards for further confidence in stability and homogeneity.

These are available as single component and in 100ml sizes.

Product Name Product Code Pack size Tests Per Kit Shelf Life (Months)
Chloride KR101-0 4x20ml 500 24
Chloride XL KR101-1 6x60ml 2250 24
Chloride L KR101-2 20x20ml 2500 24
Sulphate KR102-0 4x20ml 1000 12
Sulphate XL KR102-1 6x60ml 4500 12
Sulphate KR102-2 20x20ml 500 12
(Nitrate) TON 1 KR103-5 1x125ml 1388 18
(Nitrate) TON 2 KR104-0 4x20ml 761 18
(Nitrate) TON 2L KR104-2 20x20ml 3810 18
(Nitrate) TON 2XL KR104-1 6x60ml 3428 18
(Nitrate/Nitrite) TON 3 KR105-0 4x20ml 1142 18
(Nitrate/Nitrite) TON 3XL KR105-1 6x60ml 5142 18
(Nitrate/Nitrite) TON 3 KR105-2 20x20ml 5714 18
Phosphate 1 KR106-0 4x20ml 1379 18
Phosphate 1L KR106-2 20x20ml 6896 18
Phosphate 1XL KR106-1 6x60ml 6206 18
Phosphate 2 KR107-0 4x20ml 2500 12
Ammonium 1 KR108-0 1x125ml 2083 12
Ammonium 2 KR109-0 4x20ml 1333 12
Alkalinity 1 KR111-0 4x20ml 800 18
Alkalinity 2 KR112-0 4x20ml 727 18
Chromium VI KR113-0 4x20ml 2000 24
Silicate 1 KR114-0 4x20ml 800 18
Silicate 2 KR115-0 4x20ml 1333 18
Silicate 3 KR116-0 4x20ml 1333 12
Saline/SW Silica R1 KR128-0 4x20ml 5714 6
Saline/SW Silica R2 KR129-0 4x20ml 5714 6
Saline/SW Silica R3 KR130-0 4x20ml 5714 6
Total Hardness 1 KR117-0 4x20ml 888 12
Total Hardness 2 KR118-0 4x20ml 800 12
Total Hardness 3 KR119-0 4x20ml 4000 12
Ferrous Iron 1 KR125-0 4x20ml 2000 12
Ferrous Iron 2 KR126-0 4x20ml 889 12
Fluoride R1 KR131-0 4x20ml 2285 12
Fluoride R2 KR132-0 4x20ml 3076 12
Fluoride R3 KR133-0 4x20ml 2285 12

All our Precision Ready to Use Reagents are manufactured under ISO 9001

KS201 Ammonium Standard 1000ppm as NH4 500ml 100ml
KS202 Chloride Standard 1000ppm 500ml 100ml
KS203 Nitrite Standard 1000ppm as NO2 500ml 100ml
KS204 Nitrite Standard 10000ppm as N 500ml 100ml
KS205 Nitrate (TON) Standard 1000ppm as NO3 500ml 100ml
KS206 Nitrate (TON) Standard 1000ppm as N 500ml 100ml
KS207 Phosphate Standard 1000ppm as PO4 500ml 100ml
KS208 Sulphate Standard 1000ppm 500ml 100ml
KS209 Ammonium Standard 1000ppm as N 500ml 100ml
KS210 Phosphate Standard 1000ppm as P 500ml 100ml
KS211 Hardness Standard 1000ppm as CaCO3 500ml 100ml
KS213 Chromium Standard 1000ppm as Cr 500ml 100ml
KS214 Silica Standard 1000ppm 500ml 100ml
KS215 Manganese Standard 1000ppm 500ml 100ml
KS216 Fluoride 100mg/l 100ml 100ml
KS217 Alkalinity 1000mg/l expressed as CaCO3 100ml 100ml
KS218 Alkalinity 1000mg/l expressed as HCO3 100ml 100ml

Quality Assurance

Compliance with Reference Methods

Precision Ready to Use Reagents are fully compliant with ISO 15923-1:2013 Water Quality –

Determination of ions by a discrete analysis system and spectrophotometric detection – Part 1: Ammonium, Chloride, Nitrate, Nitrite, Orthophosphate, Silicate and Sulfate.

Additional European, U.S and U.K method references that Serosep Precision Ready to Use Reagents are compliant with;


  • EPA Method 325.1
  • Standard Methods Cl-4500 Cl E


  • EPA Method 353.1
  • Standard Methods 4500-NO3- H


  • EPA Method 354.1
  • Standard Methods 4500-NO3-H


  • EPA Method 365.1
  • Standard Methods 4500 P-E


  • EPA Method 370.1
  • Standard Methods 4500 Si D

Silicate – Saline/Seawater Low Level

  • EPA Method 370.1 (Low modification)
  • Standard Methods 4500-SiO2 D Heteropoly Blue.


  • EPA Method 375.4

Total Hardness

  • EPA Method 130.1
  • UK SCA Blue Book Methods for the Examination of Waters. Total Hardness, Calcium Hardness and Magnesium Hardness in Raw and Potable Waters by EDTA 1981 Tentative methods ISBN 0117516007

Chromium VI

  •  SW-846 Method 7196A
  • Standard Methods 3500-Cr D


  • EPA Method 340.3
  • Standard Methods WW F- 4500-F-E
  • UK SCA Blue Book Methods for the Examination of Waters and Associated Material. Fluoride in Waters, Effluents, Sludges, Plants and Soils 1982 ISBN 0117516627