You are using a version of Internet Explorer (version 8 and / or older) or the compatibility mode, which does not support some functionalities of the site you're viewing. This page can be displayed correctly you therefore may not. In order to use the full functionality of the site is a current Internet Explorer or another browser (eg: Google Chrome, Firefox) necessary.
HomeProductsProduct categoriesAccessoriesReagents and test kits > Photometry multi-parameter standards

Photometry multi-parameter standards

Multi-parameter standards for photometry by WTW

Multi-parameter standards for error-free AQA in routine and water analysis by premade concentration matching the test kit and spiking

  • Matching concentration to test kit
  • No calculation errors
  • Stocking solution

CombiChecks® are multi-parameter standards and supply the correct volume of ready-made concentration in the center of the measuring range: Everything is set matching to the respective test kits. Contrary to normal standard solutions, this does not require the dilution with calculations of the concentration or pipetting volumes and thus prevents inadvertent volume and pipetting errors. Another benefit is the premade spiking solutions for the examination of matrix effects or interfering ions.

The lot certificates of the CombiChecks® contain data for the concentration, confidence range and lot values. The concentration and confidence range can be entered into the photoLab® photometers via a menu for the AQA documentation.

Variations

Technical Data

14676 CombiCheck 10

Parameter Concentration Suitable for test set model Max. no. of determinations
Ammonium 4.00 mg/l NH4-N A6/25
14558
90
90
Chloride 25.0 mg/l Cl 14730 90
COD 80 mg/l COD C3/25
14540
30
30
Nitrate 2.5 mg/l NO3-N 14556
14773
45
60
Phosphate 0.80 mg/l PO4-P P6/25
14543
14848
18
18
9
Sulfate 100 mg/l SO4 14548
14791
00617
18
40
48

14675 CombiCheck 20

Parameter Concentration Suitable for test set model Max. no. of determinations
Ammonium 12.0 mg/l NH4-N 14544 180
Chloride 60 mg/l Cl 14730 90
COD 750 mg/l COD C4/25
14541
30
30
Nitrate 9.0 mg/l NO3-N N2/25
14542
14563
14773
14942
09713
90
60
90
60
60
180
Phosphate 8.0 mg/l PO4-P P7/25
14729
90
90
Sulfate 500 mg/l SO4 14564 90

14677 CombiCheck 30

Parameter Concentration Suitable for test set model Max. no. of determinations
Cadmium 0.500 mg/l Cd 14834 19
Copper 2.00 mg/l Cu 14553
14767
19
19
Iron 1.00 mg/l Fe 14549
14761
00796
19
9
12
Manganese 1.00 mg/l Mn 14770
00816
9
13

14692 CombiCheck 40

Parameter Concentration Suitable for test set model Max. no. of determinations
Aluminium 0.75 mg/l Al 14825 19
Nickel 2.00 mg/l Ni 14554
14785
19
19
Lead 2.00 mg/l Pb 14833
09717
19
11
Zinc 2.00 mg/l Zn 14566 190

14695 CombiCheck 50

Parameter Concentration Suitable for test set model Max. no. of determinations
Ammonium 1.00 mg/l NH4-N 14739
14752
19
19
Nitrogen 5.0 mg/l Ntot 14537
00613
9
9
COD 20.0 mg/l COD 14560 32

14696 CombiCheck 60

Parameter Concentration Suitable for test set model Max. no. of determinations
COD 250 mg/l COD 14690
14895
48
48
Chloride 125 mg/l Cl 14897 96

14689 CombiCheck 70

Parameter Concentration Suitable for test set model Max. no. of determinations
Ammonium 50.0 mg/l NH4-N 14559
00683
950
480
COD 5,000 mg/l COD 14555 95
Nitrogen 50.0 mg/l Ntot 14763 95

14738 CombiCheck 80

Parameter Concentration Suitable for test set model Max. no. of determinations
COD 1,500 mg/l COD 14691 48
Nitrate 25.0 mg/l NO3-N 14764 190
Phosphate 15.0 mg/l PO4-P 14729
P7/25
95
95

Accessories

Downloads

Are you interested
in signing up for the free
WTW newsletter?
Newsletter
registration

WTW Newsletter Registration

Any Question?
We advise
you gladly!
Contact

WTW Contact