Feature:1. Widely applied to colleges, petrochemical industries, medicine, and environment protection institutions for liquid heating.2. It uses hightemperature alkalifree glass fiber as an insulating material, seals the resistance wire in the insulating layer.3. The product has the advantages of large heating area, fast heating, good heat preservation effect, unclear flame, and not easy to touch glass ware.4. Using advanced nonelectronic electronic voltage regulating circuit, compared with mechanical temperature regulation, it has a long service life and a large temperature regulation range.5. The electric heating mantle has the function of voltage stabilization, which is the most ideal heating equipment for laboratories and fine chemical devices.Specification:Item Type: Heating MantleMaterial: Cold Rolled Steel, Alkali-Free Glass FiberApplication: Electric heating jackets are mainly used for liquid heating in university laboratories, petrochemical, pharmaceutical, environmental protection and other industriesTemperature Adjustment Range: Ambient Temperature ~ 350 (stepless temperature adjustment)Maximum Temperature: 380Working Time: ContinuousSize: Approx. 500ML: 200 x 165mm/7.9 x 6.5in, 1000ML: 260 x 200mm/10.2 x 7.9in.Package List:1 x Heating Mantle1 x Instruction ManualNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.