1
Buffer solutions; calibration solutions
9
Measuring apparatus and instruments for measuring quality parameters of water and other liquids; instruments for measuring humidity, dew points, differential pressure, pressure, rotation of speed (revolutions per minute), pH, temperature, velocity, turbidity, conductivity, direction of flow, and flow rate of gases and/or liquids; air quality measuring apparatus and instruments; redox electrodes; ion-selective electrodes; weather measuring and monitoring apparatus and instruments; apparatus and instruments for measuring the velocity, pressure, humidity and temperature of air and gases; apparatus and instruments for measuring the oxygen content, carbon monoxide content and temperature of exhaust gases of boilers and furnaces and for measuring and calculating the efficiency of combustion in boilers and furnaces; probes, sondes and sensors for all the aforesaid; alarms for all the aforesaid; pitot-static tubes; data transmitting and data logging apparatus; electronic printers adapted for printing out results of measurements and calculations made with the aforesaid apparatus or instruments; cables, battery chargers; filters and parts and fittings of the aforesaid goods; AC power adaptors; battery chargers; batteries (rechargeable); bench stands; calibration kits (measuring); calibration cap adaptors; protective carrying cases; dissolved oxygen replacement sensor kits; weatherproof and waterproof enclosures; extension and interconnection cables; flow through samplers; modems; multiplexers; remote triggers; stirrers and agitators; calibration, configuration, data download, graphic presentation, report writing, tabulation and statistical software; platinum resistance thermometer probes; thermocouple temperature probes; hot wire cap and vane anemometers; relative humidity, depth and dew point probes; non-contact type tachometers; air differential and air barometric pressure sensors; water differential and absolute sensors; gas sensor probes; rain gauges; wind direction indicators; styrol duration and intensity sensors; dew point and humidity sensors; styrol temperature sensors
37
Maintenance, repair, checking, calibration and re-calibration of scientific and industrial instruments, devices and appliances