Nutrafin Wide Range (4.5-9.0) pH Test Kit.

The Wide Range pH Test Kit (4.5-9.0) measures pH levels in freshwater and saltwater aquariums. Most fish species require accurate pH levels to survive. It is by determining whether the water in the aquarium is acidic or alkaline that you can create a natural habitat for your fish.

The kit allows for up to 100 tests and includes: One 10 ml (0.3 oz) bottle of wide range pH reagent. A glass tube with cap. A dropper. A laboratory stand. A manual.