The Waterproof Sampling Oxygen Monitor is a self-contained hypoxia system suitable for remote sampling in confined Spaces requiring daily flushing. The monitor can take samples from as far as 100 feet away and is ideal for facilities that use inert gases, including but not limited to nitrogen, helium and argon. It is ideal for environments such as breweries, bottling plants, the food industry, quick-freezing and laboratories. The monitor will remain accurate at temperatures as low as -40C. PureAire's durable, lossless zirconia sensors last for more than 10 years without replacement.