GC-O the state of the art
While the GC-O principle is simple, getting results is not.
for more than 35 years, Brechbühler has been involved in GC-O . We served some of the most recognized Fragrance and Flavor companies.
We've worked with our customers to develop new tools to get the job done. As a result The Sniffer 9000 system is now the best tool to get your GC-O done right.
- Sniffer 9000
In the past decades, many detection techniques have been hyphenated to gas chromatography.
Less attention has been paid to GC-olfactometry (GC-O) in which the human nose plays the role of the detector. However, the human nose is often more sensitive than any physical detector, and GC-O exhibits powerful capabilities that can be applied to flavors and perfumes, as well as to any odoriferous products (e.g. pollutants).
Olfactometric (or "sniffing") techniques allow the determination of impact odorants in food. They can be classified into two categories: dilution methods, which are based on successive dilution of an aroma extract until no odor is perceived at the sniffing port of the chromatograph; and intensity methods, in which the aroma extract is only injected once but the panelist records the odor intensity as a function of time by moving the cursor of a variable resistor. The Sniffer 9000 System is designed to be a dedicated "Sniffing-Device" as a stand-alone unit to be connected to any GC available on the market. The new Electronic- and Pneumatic design, based on a new industry standard (LON) provides maximum flexibility for future needs thus protecting your investments in the Laboratory.
- Panelist on Sniffer 9000
The GC-Olfactometry is in theory a simple method. At the end of a chromatographic column a split is installed and allows the sample to be splitted (e.g. 1:50) FID Detector/nose. The peak/odor impression correlation will then be performed by specialized fragrance chemists.
The heart of the Sniffer 9000 technology is the dedicated GC/Olfactometer heated Interface. Brechbühler AG has over 35 years experience in implementing hyphenated techniques by using special designed interfaces.
The Sniffer 9000 interface is engineered to transfer the high resolution available on capillary columns to the olfactometry "Sniffing Port" without loss of GC resolution and influence of oxidation or turbulence. Built as part of the current Sniffer 9000 System, the interface is manufactured from a single Stainless steel tube which is heated by direct current, thus giving the best possible temperature profile. The interface consists of a standard fused silica line resulting in an inert olfactometer interface.
Engineered to combine hot column effluents with laminar streams of inert make-up gas generated by the Sniffer 9000 System and additional humidified air supply to deliver distinct odorants to humans subjects with minimum discomfort and maximum separation. Integrated into any GC System available on the market, Brechbühler's Sniffing 9000 System is one of the most flexible GC/Olfactometer Systems available on the market.
A special analog output allows the Sniffer 9000 to be connected to an additional Channel on an existing data system, or any integrator or recorder available in the lab, to record intensity via the integrated cursor wheel on the handheld Remote control unit.