FAQs

1. What compounds can be detected by the zNoseŽ?

Volatile organic compounds (VOCs) whose carbon range falls within C4 to C22 range.

2. What is a SAW detector and how is it different from standard GC detectors?

A Surface Acoustic Wave (SAW) crystal is implemented in a very stable frequency resonator. As each analyte elutes from the capillary column, it adheres to the crystal that causes a frequency shift that is proportional to the mass of the analyte. This is a condensing detector that is extremely fast, very sensitive and with no dead volume. Most other GC detectors are ionizing detectors that have an associated dead volume.

3. Can the zNoseŽ instruments quantify the concentration levels of each compound detected?

Yes the instrument will quantify each chemical in each run. The GC is calibrated with all known chemicals. The concentration level of each standard is entered into the data file along with the chemical name. On each subsequent run, the chemical name will be displayed along with the concentration level of the chemical on that run.

4. How many tests can be conducted in a day?

As many as 300 - 400 depending on the method of testing.

5. How long will the battery last before recharging is required for those instruments with battery operation?

Up to 6 - 8 hours depending on the number of tests run.

6. What programs are offered for training operators on the use of the zNoseŽ instruments?

There are two training options available. Option one is Remote Training which is conducted via the phone and over the Internet with our experts gaining control of your computer to oversee the complete training process. The second option provides hands-on training at our facility in So. California for 2.5 days.

7. How do I know if the zNoseŽ will solve my problem, and what can be done to demonstrate that it can solve my problem?

EST will accept and analyze a prospective customer's material samples to determine whether the zNose can detect their wanted or unwanted compounds. The application test results are then presented in a report.