Lab Testing- Transparency
Independently tested Greek extra virgin olive oil — because premium quality should be measured, not merely claimed.
Theonios independently analyses its early-harvest Koroneiki extra virgin olive oil to evaluate the chemical quality, freshness and phenolic characteristics of each production.
Every olive harvest is different.
Temperature, rainfall, fruit maturity, tree physiology, harvest timing and extraction conditions can influence the characteristics of the finished oil.
That natural variation is part of authentic agricultural production.
It is also why Theonios believes transparency requires measurement.
We do not ask you simply to believe what we say about our olive oil.
We analyse it.
What Is Tested in Extra Virgin Olive Oil?
Laboratory analysis provides objective information about the chemical condition and characteristics of an olive oil.
Depending on the analysis undertaken for a particular harvest, Theonios evaluates parameters including those used internationally in the assessment of extra virgin olive oil quality.
Free Acidity
Free acidity is one of the fundamental chemical parameters used in classifying olive oil.
It can provide important information about the condition of the fruit and the care with which olives were harvested, handled and processed.
Extra virgin olive oil must remain below established regulatory limits.
At Theonios, however, simply remaining within the legal category is not the objective.
Extra virgin is our starting point, not our finish line.
Peroxide Value
Peroxide value is an indicator associated with primary oxidation.
Careful fruit handling, rapid processing and subsequent protection from oxygen, heat and light all contribute to maintaining the freshness and chemical integrity of high-quality EVOO.
K232, K270 and ΔK
Ultraviolet spectrophotometric measurements including K232, K270 and ΔK provide additional information about the oxidative condition and quality of olive oil.
Together with other analytical parameters, these measurements contribute to an objective assessment that goes considerably beyond appearance, price or marketing terminology.
How Is High-Polyphenol Olive Oil Verified?
Theonios pursues naturally high phenolic concentration through the combination of Koroneiki fruit, early harvesting, careful cultivation and controlled extraction.
But intention is not evidence.
Phenolic concentration changes according to the harvest and must therefore be measured.
Where phenolic content is stated for a Theonios production, it is based on laboratory analysis of that specific oil, rather than an assumption based on variety, bitterness, harvest date or previous seasons.
For us, this distinction matters.
High polyphenols should be measured, not marketed.
Why Does Low Acidity Matter in Premium Greek EVOO?
Consumers frequently associate very low acidity with premium olive oil.
Acidity is indeed an important analytical parameter, but it should not be considered alone.
A genuinely exceptional extra virgin olive oil is better understood through a combination of chemical analysis, sensory evaluation, fruit quality, freshness, storage conditions and traceability.
There is no single number capable of defining excellence.
This is why Theonios looks at the complete analytical picture.
Traceability from Grove to Laboratory
Transparency begins before laboratory testing.
Because Theonios works with olives from its own traditional estates, we can connect the finished product with the groves and cultivation practices behind it.
Our agricultural records and precision-monitoring programme follow conditions throughout the growing season.
Harvest establishes the connection between tree and production.
Laboratory analysis then provides independent evidence about the resulting oil.
Together, these elements create a chain of information:
Grove → Tree → Fruit → Harvest → Extraction → Storage → Laboratory → Bottle.
Protecting the Oil After It Has Been Tested
A laboratory result describes the oil at the time the sample was analysed.
Our responsibility is to preserve that quality afterwards.
Following extraction, Theonios EVOO is held in stainless-steel tanks protected by a closed-circuit nitrogen system, minimising unnecessary oxygen exposure.
Jacketed cooling allows storage temperature to be controlled before bottling.
Packaged Theonios olive oil is then maintained under cooled storage conditions and protected from excessive light and heat.
Because achieving an exceptional laboratory result means little if the oil is subsequently stored carelessly.
Why Does Theonios Publish Laboratory Results?
Because transparency should be useful.
Consumers, chefs, sommeliers, specialist retailers and importers increasingly want to understand what stands behind terms such as premium, early harvest and high polyphenol.
We believe they should be able to see the evidence.
Relevant laboratory results for Theonios productions are therefore made available so that our claims can be considered alongside independent analytical data.
A certificate cannot tell you what Theonios tastes like.
It cannot reproduce the aroma of green Koroneiki fruit, the bitterness on the palate or the peppery sensation of a fresh early-harvest EVOO.
For that, you must taste it.
But analysis can tell you something equally important:
whether the measurable quality supports the story.
At Theonios, transparency is not separate from quality.
It is part of it.
THEONIOS
Not quantity. Quality.
Independently analysed, early-harvest Koroneiki extra virgin olive oil from West Messinia, Greece.
