Home >Textile Engineering>Testing Equipment Testing equipment Fibre Testing Instruments Fibre Testing Instruments A variety of fibre testing instruments from MAG Solvics for testing length, strength, maturity, fineness, moisture, colour, and gravimetric trash. Yarn Testing Instruments Yarn Testing Instruments A variety of yarn testing instruments from MAG Solvics for testing yarn strength, elongation, evenness, imperfection (IPI), and hairiness.