Profile: Georg Fischer LLC offer engineered piping systems, valves & actuation, and signet instrumentation. We offer mechanical fittings, fittings for solvent cementing, fuseable fittings, pre-insulated fittings, double containment, signet 4150 turbidimeter, and multi-parameter controller. Our Signet 4150 turbidimeter provides accurate water quality monitoring compliant for municipal and industrial applications, in which the bright backlit LCD display allows for easy viewing, even in dark locations.