Optical refractometer for liquid additive AdBlue (health and environmental friendly urea according to ISO 22241/DIN 70070/AUS32 developed for the automotive industry) used to treat exhaust gases to the level of emission standards Euro 4 and Euro 5.
AdBlue is chemically highly pure, colourless, non-toxic synthetic urea aqueous solution (32.5 percentage by weight - this value is highlighted on a scale by an extended line) used as a reducing agent for SCR technology in diesel engines. AdBlue is injected into the catalyst where is by the influence of heat decomposed to carbon dioxide (CO2) and ammonia (NH3). Ammonia further reacts with the nitrogen oxides (NOx) contained in diesel exhaust gas and than are, instead of health hazardous NOx, emitted only pure nitrogen (N) and water (H2O). This chemical process is called Selective Catalytic Reduction (SCR). The crystallization temperature is -11 °C (see ISO 22241/DIN 70070/AUS32).
is a registered trademark of VDA.
| Scale range | Resolution |
| 0 to 40 % |
0.2 % |
The measurement
The liquids measuring is very easy. Place a few drops of measured liquid onto the prism, press slightly the cover plate to eliminate possible bubbles as well as air and the light/blue boundary will show you the result value.
General technical specifications
- Reference temperature is 20 °C
- ATC - automatic temperature compensation (in temperature range from 0 to 30 °C)
- Possibility of focusing
- Length ~ 160 mm
- Quality technical design, metal body
- Package contents: durable plastic case, refractometer, cleaning cloth, plastic pipette, screwdriver, operating instructions in English
Scale of the refractometer RAB1-ATC