Description
With continuous colour scale low cost – precise – reliable
Applications: Water Treatment (e.g. Drinking Water), Pools, Laboratory and Field Testing
The CHECKIT®Comparator is a compact, handy colorimetric unit which is suitable both for mobile and stationary analysis work.
Supplied with a generous number of different colour scales, it provides the basis for a comprehensive, easy-to-use colorimetric analysis system. The two cells are filled with the water sample and one is placed directly into the left-hand compartment of the comparator, where it acts as compensation (blank) for coloured or cloudy samples.
In the second cell, the reagents required for the analysis (tablets, powder or liquids) are mixed with the sample and this cell is then placed in the right-hand compartment of the comparator. The relevant CHECKIT®Disc is inserted in the comparator and turned until the colour standard matches the coloured water sample. The result can then be read in the large display window.
The diffuser plate on the rear of the comparator is used to provide compensation for ambient influences and unfavourable lighting conditions.
CHECKIT®Disc
Each CHECKIT®Disc contains a continuous colour scale which makes it possible to achieve an exact colour match between the colour standard and the sample. These CHECKIT®Discs are specially manufactured in selected materials to remain colour-stability over a long period and guarantee reliable, reproducible measurement results.
Instruction manuals explaining the various stages of analysis in simple, straightforward terms, are supplied with each CHECKIT®Disc.
| Analysis | Concentration |
| Aluminium | 0-0,3 mg Al |
| Ammonia | 0-1 mg/l N |
| Bromine | 0-5 mg/l Br |
| Chlorine (*) | 0,02-0,3 mg/l Cl2 |
| Chlorine | 0-1 mg/l Cl2 |
| Chlorine | 0,1- 2 mg/l Cl2 |
| Chlorine | 0-4 mg/l Cl2 |
| Chlorine KI | 10-300 mg/l Cl2 (total) |
| Chlorinedioxid (*) | 0,01-0,2 mg/l ClO2 |
| DEHA | 0-0,5 mg/l DEHA |
| Iron | 0-10 mg/l Fe |
| Iron | 0,05-1 mg/l Fe |
| Copper, free (Cu2+) | 0-1 mg/l Cu |
| Copper, free + total | 0-5 mg/l Cu |
| Copper, free + total | 0-1 mg/l Cu |
| Molybden | 0-100 mg/l MoO4 |
| Nitrate | 10-100 mg/l NO3 |
| Nitrite | 0-0,5 mg/l N |
| Ozone | 0-0,7 mg/l O3 |
| pH (Phenolred) | 6,5-8,4 pH |
| pH (Bromocresolpurpur) | 5,2-6,8 pH |
| pH (Bromothymolblue) | 6.0-7,6 pH |
| pH | 4-10 pH |
| Phosphate | 0-80 mg/l PO4 |
| Phosphate | 0-4 mg/l PO4 |
| Acid capacity KS4.3 | 0,5-5 mmol/l |
| Silicium dioxid | 0,25-4 mg/l SiO2 |
| Silicium dioxid (*) | 0-1 mg/l SiO2 |
| Sulfite | 0,5-10 mg/l SO3 2- |
| Total Alcalinity | 20-240 mg/l CaCO3 |
| Zinc | 0-1 mg/l Zn |
Every kit is delivered in a case with the CHECKIT Comparator, the disc, cuvette, reactant for about 30 analyses. The reactant can be ordered separatly for about 100 analyses.
