Profile: Double R Optics & scientific Works is a supplier, dealer & exporter of scientific and laboratory equipment. Our product range includes microscopes, polarimeter, air instruments, autoclaves, digital PH meters, centrifuges machine, abbe refractometer, humidifier, aerosol disinfector, laminar flow bench, and water instruments. We are an ISO 9001:2000 certified company. Laboratory refractometer DR 194 is designed for the Measurement of refractive index, average dispersion of liquids, solids and for determination of percentage sugar content in agues solutions.