Atago DD-7 Digital Differential Refractometer (Cat.No.3920).
Range : 0.000 to 2.000% in concentration.
Measurement Accuracy :  +0.005%
Light source : LED
Light sensor : Photo-diode (dual type)
Defferential Cell : 45°type : made of silica glass
Ambient Temperature : 10 to 30ºC
Output RS-232C printer : Digital Printer DP-42 (Optional)
Power Supply : AC100 to 240V, 50/60Hz
Dimension and Weight : 36x35x14cm,5.8 g

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