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Olive Oil Olive Oil

Olive Oil

The California Olive Oil Council Seal Certification Program has the following chemical requirements for extra virgin olive oil for those producing less than 5000 gallons.

Polyphenols, although not a required test by COOC, is of interest to many olive oil producers as it is a measure of antioxidants in olive oil. Some varietals, such as Koroneiki, naturally produce high levels of polyphenols, resulting in a strong (3 cough) sensation upon tasting.

Polyphenol values in mg tyrosol/kg:

<250 mg/kg: Low
250 -400 mg/kg: Medium
400 - 550 mg/kg: High
> 550 mg/kg: Very High

Induction Time for Calculating Best Before Date:
The Rancimat test (Induction Time) is used in the plant oil industry for predicting rancidity. It works by blowing air through a heated sample and measuring the time until the oil goes rancid. Best before date (BBD) can be estimated for EVOO. 

BWGA offers the following for Olive Oil

Please ship samples via UPS/FedEx/GSO to:
825 Riverside Ave. #3
Paso Robles, CA 93446

Download Labels Here! Label Template: Avery 5163
Stop by the lab for complimentary sample tubes!


The first couple of times we were asked to analyze vinegar here at the lab, it was due to a ‘Wines Gone Bad’ situation. But in the past several years, gourmet vinegars - planned and hand crafted – have become much more common. Pomegranate vinegars, plum vinegars, red, white and rose wine vinegars, peach vinegars - so much variety.

We are asked to analyze for the percent acidity of the vinegars, and so we do.

Percent Acidity: $25
Sample size: 50mL

What Our Customers Are Saying
They always go above and beyond. Many times they have found things that would not otherwise have been caught.
Red Soles Winery & Stillhouse, Randy Phillips