The CO2 gas purity tester has been designed to measure the purity of CO2 in a quick, easy and reliable way. It is essential mostly for bottling plants, breweries and industrial gas companies. The kit contains all the required assemblies for safe and fast CO2 gas purity test and comes with its easy instructions with pictures. The Kit can be used both on the wall or free standing. It is made by stainless steel and borosilicate 3.3 for long term resistance.