Optical inspection apparatus; Refractometers; Photometers; Optical inspection apparatus for industrial use; Water testing instrumentation for monitoring and detecting contamination; Graphite electrodes; Electronic sensors for detecting microbes; Optical sensors; Sensors for measuring chemical levels in aqueous solutions, not for medical use; Pollutant sensors; Surveying apparatus and instruments; Food texture analyzers; Food moisture analyzers; Scientific instrumentation for measuring chlorin...

Water-purifying chemicals; Water-softening preparations; Chemical preparations in the nature of filtering materials in water treatment; Test paper, chemical; Preparations of microorganisms, other than for medical and veterinary use; Chemical substances for analyses in laboratories, other than for medical or veterinary purposes; Chemical preparations for scientific purposes, other than for medical or veterinary use; Chemical reagents, other than for medical or veterinary purposes; Activated ca...