... PH/DDS/TDS Meter, etc.Application:This instrument is used for analyzing & measuring the content & concentration of ... (K, Na, Li, Ca, Ba). It can be widely applied to agriculture (soil, fertilizer, tobacoo), industry (cement, ... etc.Characteristics: ² With 5 channels and be able to detect K, Na, Li, Ca, Ba 5 elements ... Photometer/Spectrophotometer (With Air-compress, PC software, can test K,Na,Li,Ca,Ba)