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HomeProductsProduct categoriesAccessoriesReagents and test kits > Standard solutions photometry

Photometry Standard Solutions

WTW's Photometry Standard Solutions

Standard solutions as stock solution to dilute for error-free analytical quality assurance (AQA) in routine and water analysis

  • High quality with lot certificate
  • Cost-effective as stock solution
  • Programmable AQA

For few parameters such as nitrite, which are subject to a quick conversion, freshly prepared control standards of stock solutions versus the multi-parameter standard checks are mandatory. Stock solutions are also more cost-effective than the already confectioned CombiChecks®. With stock solutions, the correct dilution must be self-calculated and conducted. The use of standards is supported via AQA functions in the photoLab® photometers.

Standard solutions with limited stability, to be freshly prepared at regular intervals:

  • Free chlorine
  • Bound chlorine
  • Formaldehyde
  • Hydrazine
  • Hydrogen peroxide
  • Hydrogen sulfide
  • Phenol
  • Silicon
  • Sulfide
  • Sulfite
  • Anionic surfactants

Variations

Model Parameter, Concentration [in mg/l], Amount [in ml] Order No.
SL Al 19770 Aluminium, 1000, 500 250 460
SL NH4 19812 Ammonium, 1000, 500 250 461
AOX 00680 AOX, 20, 85 (8–16 Checks) 252 026
SL Pb 19776 Lead, 1000, 500 250 462
SL B 19500 Boron, 1000, 500 250 463
BSB 00718 BOD, 210, 10 bottles for 10x1l 252 030
SL Cd 19777 Cadmium, 1000, 500 250 464
SL Ca 19778 Calcium, 1000, 500 250 465
SL Cl 19897 Chloride, 1000, 500 250 466
SL Cr 19779 Chromium, 1000, 500 250 467
SL CrO3 19780 Chromate, 1000, 500 250 468
SL COD 100 COD 100, 100, 100 252 450
SL COD 400 COD 400, 400, 100 252 451
SL Fe 19781 Iron, 1000, 500 250 469
SL F 19814 Fluoride, 1000, 500 250 470
SL K 70230 Potassium, 1000, 500 252 471
SL Si 70236 Silicid acid (Silicon), 1000, 500 252 472
SL Cu 19786 Copper, 1000, 500 250 473
SL Mn 19789 Manganese, 1000, 500 250 474
SL Ni 19792v Nickel, 1000, 500 250 475
SL NO3 19811 Nitrate, 1000, 500 250 476
SL NO2 19899 Nitrite, 1000, 500 250 477
SL PO4 19898 Phosphate, 1000, 500 250 478
SL Ag 19797 Silver, 1000, 500 250 479
SL SO4 19813 Sulfate, 1000, 500 250 480
SL TOC 09017 TOC, 1000, 500 250 499
SL Zn 19806 Zinc, 1000, 500 250 481

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