Comparators
2000 Comparator
CheckIt Comparator
A comparator is suitable if you require:
- Fair accuracy
- Low cost
- Simplicity
The comparator has been around for many years and has traditionally been a colour disc containing individual glass standards. This is the 2000 comparator and is still used frequently.
With innovative printing techniques it has become viable to redesign this much loved piece of equipment to use plastic in place of glass. The new discs and comparator (CheckIt range) consist of a lightweight, slim line comparator combined with individual plastic discs with a continuous colour scale rather than discrete glass panes.
The same simple method is used for both comparators. Both cells are filled with sample water. One cell, the blank, is placed directly into the comparator whilst the other has reagents added to it to develop a colour. This cell is then placed into the comparator and the colours observed (sample and blank with disc overlay) matched. A two cell system allows the exact match of the colour disc to the colour produced in the sample cell and eliminates any ‘background’ colour present in the sample water.