The KRÜSS DR301-95 is both a high-quality mobile handheld device and a simple digital desktop device. In addition to the refractive index and sugar content, it can also measure the salt content (%) (NaCl). On request, the DR301-95 can be manufactured with any two other scales. Via the menu control it is possible to switch on the automatic temperature compensation for each scale – with measurement reference to sucrose. An alarm option can be set up for monitoring limit values in production processes. The supplied Mains adaptor turns the DR301-95 into a small laboratory refractometer. In mobile use, it is operated with a 9 V block battery. The DR301-95 is used in the food and beverage industry, in pharmacies, laboratories and testing laboratories as well as in research and teaching.
| Specification |
Digital handheld refractometers DR301-95 model |
| Measurement range |
nD 1.3330-1.5318
0-95 %Brix |
| Measurement accuracy 1) |
nD ±0.00015
±0.1 %Brix |
| Resolution |
nD 0.0001
0.1 %Brix |
| Measurement period 2) |
approx. 1 second |
| Minimum sample volume |
0.3 ml |
| Temperature measurement accuracy |
±0.5 °C |
| Temperature measurement resolution |
0,1°C |
| Scales |
refractive index (nD), concentration of sucrose (%Brix), salt content (%), on request up to two more scales |
| Adjustment |
Via membrane keypad |
| Additional features |
Optional temperature compensation for 10-40 °C
IP code: IP50 |
| Parts in contact with the sample |
Optical Flint glass (SF4), full chromed surface |
| Operation |
Membrane keypad |
| Dimensions (W x H x D) |
180 mm x 100 mm x 60 mm |
| Weight |
500 g |
| Operating voltage |
9 V (1x9V battery) |
¹) Under normal conditions for measurement refractive index (λ = 589 nm, 20 °C, 1013 hPa, 50 % relative humidity)
²) after temperature equalization
