Digital Luxmeter, economical solution for light measurements in a learning situations, the autoranging feature makes a one-button-and-done instrument, auto power-off conserves battery power, and other functions include MAX, MIN, and HOLD, Requires a 9V battery (not included)
conductivity tester, handheld device provides a qualitative visual indicator of the conductivity of different solutions, acids or salts, Two brass probes can be touched to a solid substance, or immersed in a liquid, to show conductivity on green LEDs
0.5%FS, IP54 Grade with 30 sets data memory ,3 predefined standards, ATC/MTC,Auto/manual endpoint, recall last calibration data,4 pole cond. Electrode to measure large range, ATC
Galvanic principle, IP54 Grade with 30 sets data memory, Galvanic DO electrode, no warm up needed, save time,Auto/manual endpoint, recall last calibration data,Easy to calibrate