ST149 Automatic Oxidation Stability Tester
ST149 automatic plant oil oxidation stability index (OSI) is
designed and manufactured in strict accordance with GB/T 21121-2007
determination of oxidation stability of animal and vegetable oils
(Accelerated oxidation test). It is controlled by a single chip
microcomputer and displayed by a liquid crystal LCD. The results
are automatically generated and printed
ISO 6886 Oxidative Stability Test Apparatus for Animal and
Vegetable Fats and Oils
ISO 6886 Oxidative Stability Tester for Animal and Vegetable Fats
and Oils
Professional Oxidation Stability Analyzer
AOCS Cd 12b-92 (AOCS American Association of Petroleum Chemists),
Sampling and Analysis of Commercial Oils: Oil Stability Index (OSI)
2.4.28.2-93 Oil self oxidation stability test CDM, Japan
AOCS Official Method Cd 12b-92
OSI (oxidative stability index): during the determination, hot air
at a certain temperature is introduced into the oil sample to
accelerate the oxidation of glycerol fatty acids and produce
volatile organic acids. The air brings the volatile organic acids
into a conductive chamber, and the indoor water dissolves the
volatile organic acids and ionizes ions, thus changing the
conductivity of the water. The computer continuously measures the
conductivity of the conductive chamber. When the conductivity rises
sharply, it indicates the arrival of the end of the induction
period, and the period before that becomes OSI time.
Controlled by single chip microcomputer, the time conductivity
curve of the sample can be drawn and the oxidation stability time
of the oil can be calculated automatically; The instrument has
sample measurement switch and status display.
Technical parameters:
| Key words | automatic plant oil oxidation stability index (OSI) |
| Standard | GB/T21121-2007,ISO 6886,AOCS Cd 12b-92 |
| Display mode | 7-inch color LCD display |
| Temperature sensor | imported Pt 100 temperature sensor |
| Heating method | metal bath heating |
| Sample quantity | 3g (recommended dosage in national standard) |
| Output format | the output format of the result USB flash disk is CSV or excel. |
| temperature setting range | room temperature ~ 220 ℃ |
| Storage mode | 199 groups of historical data can be stored for the convenience of
query; |
| Results output | at the same time can be equipped with U disk output function,
output to the PC for long-term storage |
| Special software | equipped with special calculation software, it can automatically
calculate the oxidation stability time. |
| Data display | real time display of oil oxidation process and conductivity in
induction period |
| Instrument display | the instrument itself has a color display screen, which can display
the temperature of each heating module, gas flow rate, measuring
cell status, conductivity value of each measuring position, etc |
GB/T21121-2007 animal and vegetable fats and oils Determination of
oxidation stability (Accelerated oxidation test)
ISO 6886 animal and vegetable fats and oils - Determination of
oxidation stability (Accelerated oxidation test)
2.4.28.2-93 natural oxidation stability test of fat
Special diaphragm pump with accurate flow control and constant flow
Real time measurement data of conductivity meter.
Heating module:
| Heating method | metal bath heating |
| Sample quantity | 3g (recommended dosage in national standard) |
| Sample measurement temperature setting range | room temperature ~ 220 ℃ |
| Protection function | it has over temperature protection function. It can stop
automatically when the temperature exceeds 260 ℃ |
| Temperature control mode | the four groups of temperatures can be controlled separately. The
four groups of set temperatures can have the same temperature or
different temperatures. |
Gas flow control module:
Instrument built-in diaphragm air pump
Special electronic air flow pump
Air flow range: 1 ~ 30 l/h (25 ℃, normal atmospheric pressure)
Conductivity measurement system
Conductivity measurement range: 0 ~ 300us/cm
Conductivity resolution: 0.1 us/cm
Software calculation module
It has a powerful database data management system: it can
automatically calculate the oxidation stability time.
Automatically calculate the maximum value of the second derivative
of the curve to determine the induction time
Automatically deduce the induction time of the sample at 20 ℃ or 25
℃, that is, the shelf life at room temperature
Main Application areas
-Vegetable oils: soybean oil, sunflower seed oil, rapeseed oil,
palm oil, peanut oil, etc.
-Animal fats: butter, fish oil, lard, etc.;
-Products containing oil: cosmetics, margarine (direct
determination), cereals, biscuits, nuts, bacon, sausages, meat,
etc. (determination after oil extraction);
-Study on antioxidant properties of antioxidant;
-FAME (fatty acid methyl ester,) oxidation stability determination;
-Determination of oxidation stability of light oil over copper
catalysts.
| S/N | Name | Unit | Quantity | Remarks |
| 1 | oxidation stability meter | set | 1 | |
| 2 | Reaction pool | piece | 4 | |
| 3 | Special plug for reaction tank | piece | 4 | |
| 4 | Measure the pool | piece | 4 | |
| 5 | Special plug for measuring pool | piece | 4 | |
| 6 | vent | set | 1 | |
| 7 | Test the conductivity sensor | piece | 4 | |
| 8 | Gas filter unit | set | 1 | |
| 9 | Connect special fitting for ventilation pipe | set | 1 | |
| 10 | Special calculation software for grease oxidation stability
instrument | set | 1 | High edition dedicated |
| 11 | power cord | piece | 1 | |
