Feature and use: It tests melt flow rate of high polymer under mucosity flow state.It was expressed by MFR or MVR.It suits for testing polycarbonate,FI plastic and nylon under higher melt temperature. It suits for testing polyethylene¡¢polystyrene¡¢polypropylene¡¢ABS colophony and polyformaldehyde colophony under lower melt temperature.It suits for GB/T 3682¡¶Test method for melt flow rate of thermoplastics¡·and ISO 1133.