The document describes a deep freezer used for preparing and storing ice and water quality samples. It has a 300-liter capacity, temperature range of -20°C to +20°C, automatic operation, and is made of stainless steel inside and hot enameled outside. Additional features include a built-in voltage stabilizer, two doors and three trays, fully automatic and frost-free operation, self-draining defrosting, PUF insulation, and a low noise compressor.