Single point detection of high/low levels through side wall of tank. Polypropylene is a recognized material for food material handling and conveying, and polypropylene-based products are ideal for food applications. Polypropylene is also good for use in agriculture, and for contact with many industrial fluids. (See chemical compatibility chart) Can be used in low temperature food equipment applications (up to 221F, 105C) such as food service steamers and proofers.