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ASTREE Electronic Tongue

The ASTREE Electronic Tongue from Alpha MOS, like the human tongue, performs a global analysis (fingerprint) of a complex dissolved organic or inorganic compounds mixture. 


The sensor head (7 cross selective sensors) dips into the liquid sample to be tested. Recording of the sensor output is performed within 2 minutes and then analysed by a chemometric software using multivariate statistics.


The ASTREE Electronic Tongue has a similar or better detection threshold for all the basic tastes, compared to the human tongue...


  • Saltiness

  • Sweetness

  • Sourness

  • Bitterness

  • Umami

  • Pungency

  • Spiciness

  • Astringency

  • Kukomi



Designed for Applications in R&D, Formulation and Product Development


  • Quantification of taste masking efficiency

  • Bitterness or taste attributes measurement

  • Development of placebo with a taste similar to the active formulation

  • Benchmarking with competitor's products



System features 


Liquid Autosampler with a carroussel capacity:

  • 16 beakers (80 mL) or 48 beakers (20mL)

  • Programmable sample agitation

  • Robotic sensor head

  • Individual connections for each sensor


Astree Electrochemical Sensor Array including

  • 1 reference electrode (Ag/AgCl)

  • 7 liquid cross selective sensors

  • 2 specific sets - Food & Beverage or Pharmaceutical industries


Astree Software with autosampler and acquisition control

  • Complete multivariate statistics package (PCA, DFA, SIMCA, PLS) and various maintenance tools such as automatic system diagnostic & sensor diagnostic


Analysis features:

  • Analysis Time: 200s including sensor acquisition (120s) and rinsing time (10s)

  • Precision: RSD ≤ 3%

  • Sensitivity and Accuracy: sensors sensitive and partially selective to chemical species (ionic and neutral)