Orbis STARDist

Automatic Atmospheric Distillation

Excellent performance in Automatic Distillation testing.

STARDist includes unique features such as Optical Dry Point testing, PreScan and fast heater cooling.

Automatic Distillation Performance

The smart heater control algorithms are designed for high performance.

Its automatic performance during the different heat phases (time to IBP, distillation rate, FBP) ensure the smoothest heater control and great accuracy & reproducibility, even with difficult blended products such as E15 or E20.

Methods: ASTM D1078, ASTM D850, ASTM D86, DIN 51751, GOST 2177, IP 195, ISO 3405, JIS K2254


Optical Dry Point

With conventional dry point sensors there are 3 main issues (for which STARDist’s Optical Dry Point is the ideal solution):

1. Inaccurate detection of the dry point
Not only does incorrect position of the sensor lead to inaccurate dry point detection but, because of its thickness, it can also be insensitive to detect the temperature increase of the flask.
2. The sensor is fragile
Dry point tips are made thin for increased sensitivity however, this makes them inherently fragile and easy to bend or break.
3. Dry point sensors are expensive
Using dry point sensors will add up significantly in expenses both for startup and operating cost.


Increases the reproducibility with great significance.

PreScan measures both the volume and the temperature of the sample before each test. The volume will be normalized to 100%, and the temperature will be the set-point for the receiving chamber temperature during the test, (of course, only as long as it is within method-prescribed limits). All because: having the same “start” temperature as the “recovery” temperature avoids temperature-induced volume expansion / shrinkage which would affect the distillation accuracy.

Methods: ASTM D86, D1078, D850, E123, IP195, DIN51751, ISO 3405, GOST 2177, JIS K2254.

User interface: iPad with STARDist app software. Available in the App Store. App & updates are free of charge.

Operator support features:
Guided Setup: easy to follow start up procedure to ensure all operators act the same (set mandatory on/off in user settings)
PreScan: measures sample volume and temperature in the receiving chamber before each test. Actual measured volume is then normalised to 100% volume, and receiving chamber temp. is automatically set to sample temp. (provided whithin method limits).
Results validation: quick pass / fail test validation against method limits such as “time to IBP”, “FBP temp.”, etc.
Optimization: automatically optimizes program settings with fixed InHeat and Final Heat settings after first distillation test.
Flask holder: ensures easy and correct flask positioning for both 125 ml and 200 ml flasks. The vapor probe’s height position relative to the flask’s side arm is always correct thanks to the vapor probe design in combination with the strict flask dimensions.

Heating control: Smart multiparameter-based algorithm calculates and applies the required heater settings for IBP, FBP and (4-5
ml p/min.) speed control in real-time. Suitable for unknown samples and/or complicated blends such as E20. Speed
control range: 2-11 ml p/min.

Heating system: Low mass/low voltage heater. 2 user adjustable fans for extra fast cooling after test. Automatic heater lift with correct flask pressure & positioning. Automatic shut-off in case of fire.

Condenser cooling: Solid state: based on Peltier elements with heat-pipe assisted heat sinks and silent fans for heat dissipation. No liquids involved. Condenser temperature can be increased during the distillation to deal with “light start / heavy end” products to prevent both evaporation loss and product waxing in the condenser tube. Temperature range: 0 – 65°C. Resolution 0.1°C.

Volume detection: Smart HD CCD camera for accurate volume measurement. Detects actual bottom of the meniscus. Suitable for “smoke producing” products. Each-test automatic calibration of the camera based on calibrated ring marks on receiver cylinder. Resolution: 0.01 ml, accuracy: 0.01 ml, charge volume: 0-105%.

Receiving chamber: Built-in drop deflector. Cooling: similar to condenser cooling. 1 sensor for receiver chamber temperature and 1 sensor for sample temperature. The automatic lift moves receiver cylinder up to be sealed at the top, where a small hole ensures exposure to atmospheric pressure. A small tube, laid along the condenser tube and connected to this hole, acts as “VOC Cold Trap”, preventing vapors from escaping the receiver (loss). At the end of this tube a VOC extractor can be connected dissipate VOC emissions. Temperature range: 0 – 45°C. Resolution 0.1°C.

Residue & Loss: Various options: automatic prediction, automatic measurement, manual measurement and the pre-set value. Loss correction is automatically applied to temperature readings.

Vapor temperature measurement: PT-100 class A probe with 10-point calibration data storage and automatic probe ID detection. Calibration
certificate standard supplied. True dynamic simulation of ASTM 7 & 8 in-glass thermometer behavior (lag time and emergent stem).
Range: 0 – 450°C ASTM / 0 – 500°C absolute. Units: ºC, ºF.

Dry point detection: Optical Dry Point: IR sensor for automatic dry point detection. No dry point probe required. (Conventional dp probe still available)

Pressure: Built-in pressure sensor. Automatic correction of temperature results to atmospheric pressure. Range: 70 to 110 kPa, res. 0.1 kPa.

Cetane index: Built in function for automatic calculation of cetane index included.

Fire safety: UV sensor for fire detection. Built-in fire extinguisher. N or CO2 supply required from lab (connection hose is supplied).

System health: Automatic quick system health check before every distillation run to ensure all components are in excellent state.

Connectivity: 1 x RJ45 (LAN) for connection to LIMS, Windows PC, FTP server, Kiosk printer and/or connection between multiple STARDist units.

Dimensions: 40cm x 40cm x 63cm (WxDxH), weight: 40 kg

Accessories: Kiosk printer

Voltage: 100-240 VAC 50/60 Hz

Power: 1200 W

Lab conditions: Environment temperature 10°C – 30°C. Environment humidity up to 80 % at 30°C.