... quality and performance, high accuracy, universal use, to be aimed to rapidly and quantitatively test, detect, analysis the elements ... and RS232 interface, easy to store and download the data to PC; Also can be communication with PC to read, analyze, statistic, ... by program, isolated, without interface for each other.Absorbance light ratio range: 0.000 to 4.000Repeatability: ± 0.1% (A) Repeatability ...