Specification :

This series of digital refractometers are our new products developed in year 2005 to meet our customers' requests for minimization and low-pricing of products. They are developed on basis of reducing from DRM SERIES with the features of easy operation, light weight ( 1/ 10 of the DRM SERIES) , small volume( about 1/ 5 of DRM SERIES) , saving more energy ( over 8000 times, one 1.5v battery) and etc.