From:  Novel research in the field of non-invasive diagnostics of Helicobacter pylori utilizing a library of chemical piezoelectric sensors and portable devices

 Results of training a non-specific array of sensors in pairs of test substances, volume of the equilibrium gas phase 3 cm3.

Test substancesSensor number in array/maximum sensor response, HzThe most stable parameters Ai/j in pairs of test substances/their color labelSum of colorsCoordinates in the RGB system
123456781/31/47/11/88/34/82/57/8
Acetaldehyde14191120571129#A9B834
Acetaldehyde18221220571434#C8AB34
Ethyl acetate456734517#89C674
Ethyl acetate7991156725#89BD74
Acetone976847520#7FB255
Acetone967756720 #7B8F5C
Ethanol​1891115781548#7F9075
Propanol-22327143410931119#82A0AD
Propanol-116181127882194#7F7195
Butanol-123311842111326150#7F6A95
Ammonia in water, 1%6818463311252494#82BEAD
Water591238269212075#82BEAD
Toluene1015913651137#7FA595
Toluene10241425971780#6CBFAC