Photometric Tests

Photometric Tests / Cuvette Tests

For measuring methods in the wavelength range of visible light, i.e. the photometry, high quality products are a must to achieve the best possible test results. For these so-called "transmission measurements" the concentrations of color solutions are determined by using the visible light - this is done in cuvettes.

Therefore cuvette tests are analytical methods with which chemical parameteres of solutions are determined by photometry. Very popular are disposable cuvettes (one use only) which already contain the required solutions in the right amount. Thanks to their simple handling they are often used, particularly in water analysis:

- sewage treatment plants

- waterworks

- breweries

- dairies

and in many other areas.

At Analytics-Shop you will find numerous cell tests for your lab applications from different manufacturers: Merck Millipore, Sigma Aldrich, WTW and Aqualytic. If you have any questions about our products, please do not hesitate to contact our staff. Our customer service will be happy to advise you independently and free of charge.

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Product Image of Chlorine reagent Cl2-1 (liquid) Spectroquant®, 0.010 - 6.00 mg/l Cl₂ free Chlor: Cl₂-1 und Cl₂-2 200 Tests
Chlorine reagent Cl2-1 (liquid) Spectroquant®, 0.010 - 6.00 mg/l Cl₂ free Chlor: Cl₂-1 und Cl₂-2 200 Tests
Item number: MC1000860001
Brand: Merck
€49.90
Product Image of Chlorine reagent Cl2-2 (liquid) Spectroquant®, 0.010 - 6.00 mg/l Cl₂ free chlorine: Cl₂-1 and Cl₂-2
Chlorine reagent Cl2-2 (liquid) Spectroquant®, 0.010 - 6.00 mg/l Cl₂ free chlorine: Cl₂-1 and Cl₂-2
Item number: MC1000870001
Brand: Merck
€53.20
Product Image of Chlorine reagent Cl2-3 (liquid) 600 Tests Spectroquant®, 0.010 - 6.00 mg/l Cl₂ free Chlor: Cl₂-1 und Cl₂-2, 600 Tests
Chlorine reagent Cl2-3 (liquid) 600 Tests Spectroquant®, 0.010 - 6.00 mg/l Cl₂ free Chlor: Cl₂-1 und Cl₂-2, 600 Tests
Item number: MC1000880001
Brand: Merck
€65.50
Product Image of Chlorine Cell Test Method: photometric, Spectroquant®, free and total chlorine, DPD 0.03 - 6.00 mg/l Cl2
Chlorine Cell Test Method: photometric, Spectroquant®, free and total chlorine, DPD 0.03 - 6.00 mg/l Cl2
Item number: MC1005970001
Brand: Merck
€101.00
Product Image of Ozone Test Method: photometric, DPD 0.010 - 4.00 mg/l O3 Spectroquant®, DPD 0.010 - 4.00 mg/l O₃
Ozone Test Method: photometric, DPD 0.010 - 4.00 mg/l O3 Spectroquant®, DPD 0.010 - 4.00 mg/l O₃
Item number: MC1006070001
Brand: Merck
€94.60
Product Image of Silicate (Silicic Acid) Test Method: photometric Spectroquant®, 1.1 - 1070 mg/l SiO₂ 0.5 - 500 mg/l Si
Silicate (Silicic Acid) Test Method: photometric Spectroquant®, 1.1 - 1070 mg/l SiO₂ 0.5 - 500 mg/l Si
Item number: MC1008570001
Brand: Merck
€160.00
Product Image of Total Hardness Cell Test Spectroquant®, 5 - 215 mg/l Ca, 7 - 301 mg/l CaO 12 - 537,mg/l CaCO₃
Total Hardness Cell Test Spectroquant®, 5 - 215 mg/l Ca, 7 - 301 mg/l CaO 12 - 537,mg/l CaCO₃
Item number: MC1009610001
Brand: Merck
€165.34
Product Image of Nitrate Test Method: photometric, Spectroquant®, DMP 0.10 - 25.0 mg/l NO₃-N 0.4 - 110.7 mg/l NO₃⁻
Nitrate Test Method: photometric, Spectroquant®, DMP 0.10 - 25.0 mg/l NO₃-N 0.4 - 110.7 mg/l NO₃⁻
Item number: MC1097130001
Brand: Merck
€183.00
Product Image of Phosphate Cell Test 0.5 - 25.0 mg/l PO4-P Spectroquant®, 0.5 - 25.0 mg/l, 1.5 - 76.7 mg/l PO43- 1.1 - 57.3 mg/l P2O5
Phosphate Cell Test 0.5 - 25.0 mg/l PO4-P Spectroquant®, 0.5 - 25.0 mg/l, 1.5 - 76.7 mg/l PO43- 1.1 - 57.3 mg/l P2O5
Item number: MC1145460001
Brand: Merck
€127.00
Product Image of Oxygen Cell Test Method: photometric 0.5 - 12.0 mg/l O2 Spectroquant®, 0.5 - 12.0 mg/l O₂
Oxygen Cell Test Method: photometric 0.5 - 12.0 mg/l O2 Spectroquant®, 0.5 - 12.0 mg/l O₂
Item number: MC1146940001
Brand: Merck
€175.00
Product Image of Phosphate Cell Test 0.5 - 25.0 mg/l PO4-P Spectroquant®, 1.5 - 76.7 mg/l PO43- 1.1 - 57.3 mg/l P2O5
Phosphate Cell Test 0.5 - 25.0 mg/l PO4-P Spectroquant®, 1.5 - 76.7 mg/l PO43- 1.1 - 57.3 mg/l P2O5
Item number: MC1147290001
Brand: Merck
€170.30
Product Image of Iron Cell Test Method: photometric 1.0 - 50.0 mg/l Fe Spectroquant®, 1.0 - 50.0 mg/l Fe
Iron Cell Test Method: photometric 1.0 - 50.0 mg/l Fe Spectroquant®, 1.0 - 50.0 mg/l Fe
Item number: MC1148960001
Brand: Merck
€134.00
Product Image of CSB-KUEVETTENTEST 25 - 1500 MG/L SPECTROQUANT Inhalt pro Packung: 1 PAK WGK: 2
CSB-KUEVETTENTEST 25 - 1500 MG/L SPECTROQUANT Inhalt pro Packung: 1 PAK WGK: 2
Item number: MC1145410001
Brand: Merck
€148.73
Product Image of Spectroquant Sulfat-Küvettentest 5-250mg/l
Spectroquant Sulfat-Küvettentest 5-250mg/l
Item number: MC1145480001
Brand: Merck

In stock

€103.70 €122.00
Product Image of SPECTROQUANT SULFAT-KUEVETTENTEST
SPECTROQUANT SULFAT-KUEVETTENTEST
Item number: MC1145640001
Brand: Merck
€122.00
Product Image of Combicheck 50 Spectroquant
Combicheck 50 Spectroquant
Item number: MC1146950001
Brand: Merck
€115.00
Product Image of Phosphat-Test, Spectroquant, 0,5-30mg/l
Phosphat-Test, Spectroquant, 0,5-30mg/l
Item number: MC1148420001
Brand: Merck

In stock

€164.00
Product Image of AOX Cell Test Method: photometric 0.05 - 2.50 mg/l Spectroquant®
AOX Cell Test Method: photometric 0.05 - 2.50 mg/l Spectroquant®
Item number: MC1006750001
Brand: Merck
€229.00
Product Image of Iron Test Method: photometric 0.010 - 5.00 mg/l Fe Spectroquant®
Iron Test Method: photometric 0.010 - 5.00 mg/l Fe Spectroquant®
Item number: MC1007960001
Brand: Merck
€144.00
Product Image of Lead Test Method: photometric 0.010 - 5.00 mg/l Pb Spectroquant®
Lead Test Method: photometric 0.010 - 5.00 mg/l Pb Spectroquant®
Item number: MC1097170001
Brand: Merck
€138.00
Product Image of Ammonium Cell Test method: photometric 0.010 - 2.000 mg/l NH4-N 0.01 - 2.58 mg/l NH4+ Spectroquant®
Ammonium Cell Test method: photometric 0.010 - 2.000 mg/l NH4-N 0.01 - 2.58 mg/l NH4+ Spectroquant®
Item number: MC1147390001
Brand: Merck
€122.00
Product Image of Iron Test Method: photometric 0.0025 - 5.00 mg/l Fe Spectroquant®
Iron Test Method: photometric 0.0025 - 5.00 mg/l Fe Spectroquant®
Item number: MC1147610002
Brand: Merck
€107.00
Product Image of Phosphate Test MColortestTM, 200 Tests, 0.015 - 0.030 - 0.045 - 0.06 - 0.08 - 0.11 - 0.14 MG/L
Phosphate Test MColortestTM, 200 Tests, 0.015 - 0.030 - 0.045 - 0.06 - 0.08 - 0.11 - 0.14 MG/L
Item number: MC1183940001
Brand: Merck
€149.00
Product Image of COD 14690 cell test 50 - 500 mg/l COD, Chemischer Sauerstoffbedarf Reaktionsküvettentest, Model name : CSB 14690
COD 14690 cell test 50 - 500 mg/l COD, Chemischer Sauerstoffbedarf Reaktionsküvettentest, Model name : CSB 14690
Item number: WW250304
Brand: WTW
€119.00
Product Image of CSB 14691 CT 300 - 3500 mg/l COD
CSB 14691 CT 300 - 3500 mg/l COD
Item number: WW250351
Brand: WTW
€119.00
Product Image of NH4-N 14739 cell test 0.01 - 2.00 mg/l NH4-N0.01 - 2.60 mg/l NH4, Model name : NH4-N 14739
NH4-N 14739 cell test 0.01 - 2.00 mg/l NH4-N0.01 - 2.60 mg/l NH4, Model name : NH4-N 14739
Item number: WW250495
Brand: WTW
€119.00
Product Image of N total KT 25 pcs.
N total KT 25 pcs.
Item number: WW250358
Brand: WTW
€175.00
Product Image of Reagent nitratee KT, model 14542 for Photo-Lab+pHotoFlex, 25 pcs., Model name : NO3-N 14542
Reagent nitratee KT, model 14542 for Photo-Lab+pHotoFlex, 25 pcs., Model name : NO3-N 14542
Item number: WW250410
Brand: WTW
€151.00
Product Image of COD cell test 01797 COD 5000-90000 mg/l, Model name : CSB 01797
COD cell test 01797 COD 5000-90000 mg/l, Model name : CSB 01797
Item number: WW252093
Brand: WTW
€130.00
Product Image of cell test zinc 0.1-2.00, Model name : Zn 100861
cell test zinc 0.1-2.00, Model name : Zn 100861
Item number: WW252049
Brand: WTW
€139.00
Product Image of Pipecheck, Spectroquant®, Testsolution (4x6 Cells) reference solution (4 Cells)
Pipecheck, Spectroquant®, Testsolution (4x6 Cells) reference solution (4 Cells)
Item number: MC1149620001
Brand: Merck
€429.00
Product Image of Cell Test Total Nitrogen, 10 - 150 mg/l Nges, Model name : Nges 14763
Cell Test Total Nitrogen, 10 - 150 mg/l Nges, Model name : Nges 14763
Item number: WW250494
Brand: WTW
€158.00
Product Image of Cells and accessories 25 Units Spectroquant®, for the photometric chlorine determination
Cells and accessories 25 Units Spectroquant®, for the photometric chlorine determination
Item number: MC1000890001
Brand: Merck
€85.10
Product Image of Spectroquant CSB-Küvettentest
Spectroquant CSB-Küvettentest
Item number: MC1145400001
Brand: Merck
€121.00
Product Image of Spectroquant® CSB-Küvettentest 500-10.000mg/l
Spectroquant® CSB-Küvettentest 500-10.000mg/l
Item number: MC1145550001
Brand: Merck
€121.00
Product Image of Spectroqu.CSB-Küvettentest 4,0-40,0mg/l
Spectroqu.CSB-Küvettentest 4,0-40,0mg/l
Item number: MC1145600001
Brand: Merck
€121.00
Product Image of Lead LCK cuvette test, 25/PAK, MR 0.1 - 2.0 mg/l
Lead LCK cuvette test, 25/PAK, MR 0.1 - 2.0 mg/l
Item number: HALCK306
Brand: Hach Lange
€125.00
Product Image of Aluminium LCK cuvette test, 24/PAK, MR 0.02 - 0.5 mg/l
Aluminium LCK cuvette test, 24/PAK, MR 0.02 - 0.5 mg/l
Item number: HALCK301
Brand: Hach Lange
€111.00
Product Image of Cadmium LCK cuvette test, 25/PAK, MR 0.02 - 0.3 mg/l
Cadmium LCK cuvette test, 25/PAK, MR 0.02 - 0.3 mg/l
Item number: HALCK308
Brand: Hach Lange
€129.00
Product Image of Nickel-Sulphate and Sulphamate bath LCK cuvette test, 25/PAK, MR 5-120 g/l Ni
Nickel-Sulphate and Sulphamate bath LCK cuvette test, 25/PAK, MR 5-120 g/l Ni
Item number: HALCK237
Brand: Hach Lange
€120.00
Product Image of Chromic acid baths LCK cuvette test, 25/PAK, MR 50 ... 450 g/l CrO3
Chromic acid baths LCK cuvette test, 25/PAK, MR 50 ... 450 g/l CrO3
Item number: HALCK213
Brand: Hach Lange
€123.00
Product Image of Sulphate LCK cuvette test, pk/25, MR 50 … 150 mg/l
Sulphate LCK cuvette test, pk/25, MR 50 … 150 mg/l
Item number: HALCK153
Brand: Hach Lange
€114.00
Product Image of Bitter Units LCK cuvette test, pk/25, MR ≥ 3 BU
Bitter Units LCK cuvette test, pk/25, MR ≥ 3 BU
Item number: HALCK241
Brand: Hach Lange
€104.00
Product Image of Cyanide free, LCK cuvette test, pk/25, MR 0.01-0.5 mg/l
Cyanide free, LCK cuvette test, pk/25, MR 0.01-0.5 mg/l
Item number: HALCK315
Brand: Hach Lange
€112.00
Product Image of Fluoride, LCK cuvette test, pk/25, MR 0.1 - 2.5 mg/l
Fluoride, LCK cuvette test, pk/25, MR 0.1 - 2.5 mg/l
Item number: HALCK323
Brand: Hach Lange
€105.00
Product Image of Formaldehyde LCK cuvette test, pk/25, MR 0.5 - 10.0 mg/l
Formaldehyde LCK cuvette test, pk/25, MR 0.5 - 10.0 mg/l
Item number: HALCK325
Brand: Hach Lange
€102.00
Product Image of Potassium LCK cuvette test, pk/24, MR 8.0 - 50 mg/l
Potassium LCK cuvette test, pk/24, MR 8.0 - 50 mg/l
Item number: HALCK328
Brand: Hach Lange
€103.00
Product Image of Molybdenum LCK cuvette test, pk/25, MR 3 - 300 mg/l
Molybdenum LCK cuvette test, pk/25, MR 3 - 300 mg/l
Item number: HALCK330
Brand: Hach Lange
€108.00
Product Image of TOC LCK cuvette test (purging method), pk/25, MR 3 - 30 mg/l TOC
TOC LCK cuvette test (purging method), pk/25, MR 3 - 30 mg/l TOC
Item number: HALCK385
Brand: Hach Lange
€179.00
Product Image of TOC LCK cuvette test (purging method), pk/25, MR 30 - 300 mg/l TOC
TOC LCK cuvette test (purging method), pk/25, MR 30 - 300 mg/l TOC
Item number: HALCK386
Brand: Hach Lange
€179.00

Photometry

In laboratories in general photometry describes the method of determining the concentration of colored solutions with the aid of light. Here, white light is projected through a prism onto a screen. Depending on which wavelength is used, the color of the test object or of the test solution changes:

  • 390 - 435 nm: purple / violet
  • 435 - 495 nm: blue
  • 495 - 570 nm: green
  • 570 - 590 nm: (greenish) yellow
  • 590 - 630 nm: orange
  • 630 - 770 nm: red

As a light source either infrared or ultraviolet light can be used. Infrared radiation, also called radiant heat is radiated  by a body even more the warmer it is. Therefore infrared radiation occurs primarily in medically treating premature infants in incubators, but the energy efficiency of homes can also be determined. UV radiation, however, has the ability to kill bacteria. They are used in the sterilization in the operating room, as well as to kill germs in food. Furthermore the UV light is used for curing composite fillings in dental practices - the majority, however, know the UV light in conjunction with solariums and sun beds. UV light in sun beds is used to build up vital vitamin D.

The principle of the photometry is based on the attenuation of the light as it passes through matter. The weakening of the light is the result of an interaction between light of a specific wavelength and of the test substance that needs to be present as a solution. The amount of light attenuation is a measure of the concentration, under specified conditions.

Standard solutions for photometry

The lab user can choose from two different options when using cuvette tests. One of these are standard solutions which are used as a stock solution for dilution of solutions, e.g. in water analysis.

These freshly prepared control standards from stock solutions must be used in a few parameters (e.g. nitrite) since they are subject to rapid change. When using these standard solutions, the correct amount of dilution must be calculated and carried out by hand. A series of standard solutions which must be freshly prepared on a regular basis:

  • nitrite
  • free chlorine
  • formaldehyde
  • hydrazine
  • silicon
  • sulfite
  • hydrogen peroxide
  • anionic surfactants

and some more. Apart from the additional "effort" having to create the solutions again and again, these control standards are generally cheaper than the ready-to-use multi-parameter standards.

Multi-parameter standards for photometry

The second option is therefore the use of solutions that have already been created, the ready-to-use so-called multi-parameter standards. They convince with a simple handling since they already have the right concentration to the test set. Compared to the already named standard solutions there is no need for dilution with calculations for concentration and pipetting volume - thus accidental volume and pipetting errors can be avoided. Furthermore those standards score with pre-increase solutions for the study of matrix effects or interfering ions.