Main Applications

Determination of oxidative stability of animal and vegetable oils and fats

Determination of Oxidative Stability of Foods Containing Oils and Fats

Determination of oxidative stability of cosmetics containing oils and fats

Evaluation of antioxidant capacity of antioxidants

Method Standards

AOCS Cd 12b-92(AOCS - American Association of Oil Chemists), Sampling and Analysis of Commercial Oils and Fats: Oil Stability Index (OSI)

ISO 6886Animal and vegetable oils and fats – Oxidation stability determination (accelerated oxidation test)

2.4.28.2-93Oil self oxidation stability test CDM， Japan

GB/T 21121-2007Determination of oxidative stability of animal and vegetable oils and fats (accelerated oxidation test), China

Principles of Measurement

When samples such as oils and fats are placed at high temperatures and exposed to air, their stabilization period will be greatly shortened. When the stability of the sample is broken (commonly known as rancidity), a large amount of inorganic acidic substances will be rapidly released. By monitoring the changes in acidic substances, the stability time of the sample under accelerated oxidation conditions can be measured. Using extrapolation algorithms, the stability index (OSI) of the sample at room temperature or other temperatures can be obtained. This method is a universal approach in current standards and many national standards.

Product Features

The reactor and measurement unit are designed separately, avoiding the influence of high temperature and air pump on the circuit.

Simple panel temperature setting, convenient and fast

Rapid heating up, avoiding long waiting times for heating up

Accurate temperature control ensures measurement accuracy

Ultra quiet air pump, avoiding noise interference

Each sample can independently set the gas flow rate

A single reactor can provide 4 sample grades

The number of reaction furnaces can be selected as needed

Full range, automatically calibratable conductivity measurement system

Main Technical Specifications

Number of sample positions for a single reactor: 4

Sample size: a few grams (g) or a few milliliters (ml)

Temperature setting range: room temperature~220 ℃

Temperature measurement range: -60 to+250 ℃

Temperature resolution: 0.1 ℃

Temperature wave after reaching the set temperature: ± 0.3 ℃

Heating rate (from room temperature to 120 ℃): about 15 minutes

Conductive electrode: standard double platinum plate electrode

Conductivity cell constant:~1.0

Measurement range: 0-10 S/cm (full range)
Resolution: 0.01 μ S/cm

Large error: ± 1% ± 0.5 μ S/cm

Flow rate range: 4-36 L/h

Large fluctuations in flow rate: ± 10%

Flow rate adjustment: Each sample can be independently adjusted