PONPE 597EC เครื่องวัดและควบคุมค่าความนำไฟฟ้า Conductivity meter
conductivity/resistivity analyzer measurement of EC value or TDS value and temperature in the solution in the industry
Handheld Digital Light Meter LX1330B Illuminance Meter Measuring 200000 Lux, High Accuracy and Rapid Response. The LX1330B can measure from 0 up to 200,000 lux