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Electronic Sensor Technology WWW.ESTCAL.COM
The zNose™ : Commercial Application of a Quantitative Electronic Nose with Olfactory Images
and Virtual Sensor Arrays
• Introduction - zNoseTM Vs eNose
• Fast Chromatography and Virtual Sensor Arrays
• VaporPrintsTM - True Olfactory Images
• Food & Beverage Applications
Edward J. Staples Electronic Sensor Technology
Newbury Park, CaliforniaESTCAL.COM
Presented at The Knowledge Foundation Conference
San Diego, California, October 2000
Electronic Sensor Technology WWW.ESTCAL.COM
zNose™ Description
• The zNose™ - A GC/SAW Electronic Nose with internal preconcentrator and helium gas supply
• 10 Second Analysis Speed
• Volatile Compounds - ppb MDL
• Semi-Volatile Compounds - ppt MDL
Handheld Benchtop
2 Popular Models Available
Electronic Sensor Technology WWW.ESTCAL.COM
zNoseTM Vs eNose
zNose eNoseSpeciation YES NOEPA Methods YES NOSensitivity ppt ppmSpeed Seconds MinutesIntelligence Human ArtificialPrecision HIGH LOWAccuacy HIGH LOWStability Months HoursCal Standards YES NOSensors hundreds 4-32Olfactory Images YES NO
Electronic Sensor Technology WWW.ESTCAL.COM
The Only Electronic Nose to be Validated by US EPA
• US EPA Environmental Technology Validation– Well Water Monitoring for volatile organic pollution– Soil testing for PCBs in the field– Soil testing for Explosives in the field
• White House ONDCP - Law Enforcement– Explosives– Drugs & Contraband– Money
Electronic Sensor Technology WWW.ESTCAL.COM
Odor Management (Rendering Plants)
Smell from Blood Dryer (20oC Detector)
Creates Olfactory Images Specific to
Factory Odors
Electronic Sensor Technology WWW.ESTCAL.COM
Quality Controlof Plastics
Electronic Sensor Technology WWW.ESTCAL.COM
Fatty Acids in Milks
•Fats, Proteins, and sugars
•400 different fatty acids and fatty acid derivatives are found in milk
•Wide range of vapor pressures: butyric acid (C4) to triglyceride (C26)
Milk Fat Composition
0%10%
20%30%40%
50%60%
70%80%
C4-C8 C10-C14 C16+
Co
nte
nt
(%)
Electronic Sensor Technology WWW.ESTCAL.COM
TCA in Wine and Corks (part per
trillion)
Electronic Sensor Technology WWW.ESTCAL.COM
zNose™ Analysis of Campbell’s Soup
Clam ChowderChicken Noodle
MinestroneConsommé Beef
Split PeaBean Bacon
Cream of AsparagusVegetable
tomatoPotato
Cream of MushroomCream of Chicken
Electronic Sensor Technology WWW.ESTCAL.COM
Vegetable Soup
Now you can define the smell of
vegetable soup using 26 specific
chemical sensors!
Electronic Sensor Technology WWW.ESTCAL.COM
Campbell’s Soup VaporPrintsTM
Electronic Sensor Technology WWW.ESTCAL.COM
zNoseTM Analysis of Whiskey
Electronic Sensor Technology WWW.ESTCAL.COM
Now You can Quantify the Chemistry of a Wine’s Aroma in Seconds !
Electronic Sensor Technology WWW.ESTCAL.COM
Comparison of 4 Popular American Beers
Electronic Sensor Technology WWW.ESTCAL.COM
Summary
•zNoseTM technology– 10 Second Speed with true ppt
sensitivity
•Virtual Chemical Sensor Arrays
•True Olfactory Images
•Only Government Validated Electronic Nose : EPA/FDA Methods
•Virtually all Foods and Beverages
•Save Time and $$ with demonstrated 30 day (or less) payback period
For more information visit our web sites :