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soil resistivity
LCD count down display
time setting and threshold adjusting and etc
825 have the excellent performance of both desktop instrument and portability of handheld
Total Harmonic Distortion: <4%
AZ8403 Handheld Digital Water Dissolved Oxygen Meter DO Meter Range 0~199.9 Pond Water Oxygen Content Tester Flowmeters soil resistivityBrand: Graigar Features: Big LCD with D. O. & Temperature value display and stability indicator. Easy 100% Dissolved Oxygen Value calibration; Dissolved oxygen sensor is the most cost effective Clark type electrode. 8403 DO probe does not need refill electrolyte often as galvanic electrode; Accurate dissolved oxygen measurement. Manually salinity and barometric pressure compensation. Stores and recalls 99 data with temperature readings; Real time
