Model 1601 EI-DVI COND/TDS meter Microprocessor based , 16x2 alphanumeric LCD Display showing Temp.Auto ranging,temperature co-efficient Data Storage facility for 90 sample & external printer attachable Range Conductivity 0-20/200us/2ms / 200ms & TDS--20 / 200 ppm / 2ppt / 20ppt / 200ppt with cell K=1.00