Atago DD-7 - Digital Differential Refractometer
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Atago DD-7 - Digital Differential Refractometer
Contact us for a quote
This model measures solutions of low concentration up to 2% at an extremely high accuracy level of ±0.005%. It is recommended for such samples as unsweetened tea and surfactants. 2 types of solutions – distilled water as the standard solution and the sample liquid to be measured – are injected into the instrument with syringes. By using a standard solution other than distilled water, solutions of higher concentration can also be measured.


Model DD-7
Cat. No. 3930
Method of measurement Differential optical refraction
Range 0.000 to 2.000% for sucrose is possible to measure samples with refractive index up to 1.50 (nD) by reference solution.
Resolution Brix : 0.001%
Accuracy Brix : ±0.005 (for sucrose solution at 30°C)
Measurement Temperature 15.00 to 40.00?
Dimensions & Weight 36×35×14cm, 6.2kg
Output • Digital Printer DP-AD (Optional)
• RS-232C


· Digital printer DP-AD (Dot matrix printer) : CAT.NO.3123

· 0.25% Sucrose (±0.005%) : RE-11025D

· 0.50% Sucrose (±0.005%) : RE-11050D

· 1.00% Sucrose (±0.005%) : RE-11100D

· Low concentration Optional Sucrose Solutions below 2.000% (±0.005%) : RE-172030


· Printer paper (long-term storage) for Thermal printer : RE-8414

· Printer paper for Dot matrix printer : RE-89403

· Ribbon cassette : RE-89402

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