... Refractometer, Abbe Refractometer, PH/DDS/TDS Meter, etc.Application:This instrument is used for analyzing & measuring the content & concentration of ... elements (K, Na, Li, Ca, Ba). It can be widely applied to agriculture (soil, fertilizer, tobacoo ... minLinearityBetter than the best results of the intermediate value of 2% (single-point CAL)Response Time less than 8sTime ...