HYVISTEK

Apparatus for testing gas, liquids and solids; Concentration meters; Illuminometers; Flowmeters; Refractometers; Thermometers, not for medical purposes; Liquid analyzers; Air analysis apparatus; Surveying instruments; Scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants; Optical inspection apparatus; pH meters; Digital pH meters; Hygrometers