Analysis of the Acidity of Olive Oil

CDR OxiTester: the fast, simple and reliable olive oil testing system, to be used directly at theoil mill, in the oil processing plant or at the time of purchaseWith the method devised by the CDR laboratories, it is possible to easily analyze the acidity of olive oil and extra virgin olive oil in 1 minute, along the production line of an oil mill, upon acceptance or during the sales phase. The CDR method simplifies and speeds up the official procedure and the results are aligned to the ISO/AOCS reference method.

Analyzers to test Acidity (FFA) in Olive Oil 

You can determine the percentage of acidity of olive oil with the CDR OxiTester, a tool for the analysis of olive oil of the CDR FoodLab® line available in 2 versions, CDR OxiTester and CDR OxiTester Junior.

  CDR OxiTester per analisi su olio di oliva

CDR OxiTester  Junior per analisi su olio di oliva
Parameters Olive Oil:
Peroxide Value
Acidity (FFA)
Total Polyphenols/OSI
Sugars in Olives

Olive Oil:

Acidity (FFA)
Peroxide Value
Total Polyphenols/OSI  (optional)

Simultaneous Sample Analyses 16 3
Multiple Analyses on a Sample si


End point test.
Test time: 1 minute.
It is possible to perform several test sessions with a maximum of 16 samples.

Principle of the test

The fatty acids of the sample, under conditions of pH <7.0, react with a chromogen, developing a color whose optical density, measured at 630 nm, is proportional to the concentration of the fatty acid, expressed as % of oleic acid.

Correlation Curve

The correlation curve of the CDR OxiTester analytical method with the AOCS Official Method Ca 5a-40 of reference

Comparison between the OxiTester method of analysis of the acidity of olive oil and the ISO/AOCS reference method


Reagent test Kits

The reagents are packaged in foil pouches containing 10 tubes useful to perform 10 analyses.

This is the minimum package that allows the use of CDR systems even to those who need to make a few analyses, thus not wasting reagents.

There are also boxes of 100 tests, however, packaged in 10 bags of 10 tubes containing the reagent.

Code *300128/A: 10 test.

Code *300125/A: 100 test (10 buste da 10 test)

For samples, with high acidity, where a dilution is requested, you must use an appropriate reagent kits.

Code. 300129: 100 tests.

The reagents have a shelf-life of 12 months.

Sample handling and usage of curves

Oil: collect as is 

Measuring range Code Resolution  ResolutionRepeatability
0,03 – 1,1% oleicAc. *300128/A
0,01% oleicAc. 0,02% oleicAc.
1 – 3,5% oleicAc. *300128/A
0,01% oleicAc. 0,1% oleicAc.
1 – 13% oleicAc. *300128/A 
0,01% oleicAc. 0,5% oleicAc.

Reagents developed by CDR S.r.l - Quality System Certified ISO 9001 Ed. 2015 - Certificate n. 9115

Take a Look at CDR OxiTester olive oil testing in few minutes easy to use, compliance with AOCS methods

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With the CDR system, you can perform your tests in total autonomy

Neither skilled staff nor a dedicated external laboratory is needed to use our systems. CDR FoodLab® optimizes traditional testing methods, making them faster and easier, while guaranteeing accuracy standards in line with the reference methods.

Analytical kit

CDR FoodLab® Analysis Systems use disposable pre-vialed reagents specifically developed by the research laboratories of CDR. The use of pre-vialed reagents and the analytical procedures allow:

  • a sample preparation that is quick and easy, when needed at all;
  • making analytical procedures extremely fast and easy;
  • removing all needs for complex calibration procedures.

Reagents come in aluminum packages containing 10 test tubes each to perform 10 tests (or packages for 100 tests containing 10 single packages of 10 test tubes each).

Just a few steps and results are yielded right away

Just a few steps will suffice to carry out your analysis in a rapid way in total autonomy. The system is composed of both the analyzer based on photometric technology and a kit of low toxicity, pre-vialed reagents, developed by CDR.

CDR FoodLab® is cost-effective because it does not require the use of expensive equipment and does not entail maintenance, assistance or calibration costs.
Find out how it works