Comparator Block

When a wider range of chemical tests may be required, or the flexibility to add tests at a later date is desirable, a comparator block using the wheel comparator method is a great choice. 
Fast and simple testing of multiple chemical parameters
Easy to switch between tests simply by inserting a different wheel
Chemical reagents can be purchased separately saving money and storage space, giving maximum flexibility
A wide range of chemical tests available
Provided in a case to avoid damage during transport and use