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AutoFlow BET+
for Fast and High Throughput Surface Area Analysis

AutoFlow BET+ High Throughput Surface Area Analyzer  

The AutoFlow BET+ is a fully automated state-of-the-art dynamic flow system designed to enable an extremely rapid evaluation of the surface areas of solid samples. Single-point or multi-point determination of surface areas using different standard methods (such as BET and STSA) is easily carried out without the need for measuring system void volumes or recalibrating signal responses.

The instrument consists of one control module and one, two, or three independent analysis stations. The control module features a touchscreen and houses three built-in sample preparation stations. Pure gas inputs or, optionally, premixed gases, are automatically mixed to the desired target concentrations using built-in mass flow controllers. The system includes novel MEMS-TCD sensors and all standard accessories needed for its operation.


Exceptional Speed

  • Single point BET areas in < 5 min/sample.
  • Multipoint BET areas in < 15 min/sample.
  • No need for pre- or post-calibration.

Superior Throughput

  • Up to 3 single point BET areas in < 5 min.
  • Up to 3 multipoint BET areas in < 15 min.
  • Up to 36 BET area analyses per hour.

Built-in Sample Preparation

  • 3 independently programmable degassers.
  • Maximun degas temp. 350° C (450° C optional, with quartz sample cells).
  • Adjustable flows and fast-cooling slots.

Software Capabilities

  • Ethernet and remote access.
  • Supports 21 CFR Part 11 Compliance.
  • Multiple Language Options.





Specifications- Technical

Feature Detail
Accuracy vs. Reference Standards ± 3.0% *
Repeatability Same Sample in Same Station ± 1.0%
Reproducibility Between Different Units ± 3.0%
Lower Limit N2 Surface Area [m2] 1 m2 in the cell
Upper Limit N2 Surface Area [m2] 150 m2 in the cell
Speed Single Point BET, 1 sample [minutes] < 5
Speed Single Point BET, 3 samples [minutes] 5
Speed 3-Point BET, 1 sample [minutes] < 15
Speed 3-Point BET, 3 samples [minutes] 15
Degasser Max. Temp. Degree Celsius [˚C] 350 (450**)
Sample Capacity Per Analysis Station One Cell
Analysis Stations Per Control Module up to 3
Multiple System Paths Per Control Module 3
Mass Flow Controllers Per Analysis Station 2
Pressure Sensors Per Analysis Station 1
    * As compared to vacuum/volumetric data.
    ** Optional, using quartz glassware.

AutoFlow BET+

AutoFlow BET+
Control Module: with one
analysis station
AutoFlow BET+, Two Stations
Control Module: with two
analysis stations
AutoFlow BET+, Three Stations
Control Module: with three
analysis stations


  Control Module: with one
analysis station
Control Module: with two
analysis stations
Control Module: with three
analysis stations
Height: 24.5 in. (62.23 cm) 24.5 in. (62.23 cm) 24.5 in. (62.23 cm)
Width: 16.29 in. (41.38 cm) 23.62 in. (60 cm) 30.63 in. (77.8 cm)
Depth: 21.57 in. (54.79 cm) 21.57 in. (54.79 cm) 21.57 in. (54.79 cm)
Weight: 75 lbs. (34.1 kg) 111 lbs. (54.5 kg) 147 lbs. (68.8 kg)


Voltage: 100 - 120 VAC or  220 - 240 VAC 
Frequency: 50/60 Hz
Power (nominal): 45 VA
Power (max): 350 VA
Connection: Grounded, single-phase outlet


Normal Environment Conditions.

Temperature: 5–40°C
Relative Humidity: Up to 80 % (non-condensing)