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743 Rancimat for oils and fats (115 V)

Metrohm Stability Measuring Instruments are the ideal equipment for the following applications:

 
2.743.0015 743 Rancimat for oils and fats (115 V)
Instrument for the automatic determination of the oxidation stability of natural fats and oils or of products that contain fat. Conductometric indication. Instrument for 115 V and 50 - 60 Hz.
 
2.743.0015 743 Rancimat for oils and fats (115 V)

Determination of the oxidation stability of natural fats and oils

As a modern, computer-controlled instrument, the 743 Rancimat permits convenient determination of oxidation stability. Disposable reaction vessels reduce the cleaning effort for the accessories to an absolute minimum. This saves time and costs. In addition, accuracy and reproducibility are improved significantly. Very precise and reproducible temperature settings are now possible with the help of the certified temperature sensor in the GLP set, which also further improves the comparability of the results.The software of the third Rancimat generation with automatic data recording and evaluation as well as a measurement database permits convenient management of large quantities of data. A rough estimate of the lifetime of a product is possible with the help of the unique temperature extrapolation function.

Oxidation stability of natural fats and oils in the food industry

The determination of the oxidation stability of oils and fats is the classical application of the 743 Rancimat. The so-called induction time that is determined in this application characterizes the resistance of oils and fats to oxidation. The expression "oil stability index" (OSI) is also commonly used instead of the term "induction time". The Rancimat method is also referred to as an automated Swift Test or accelerated oxidation test and has nowadays come into general use as an automated variant of the extremely expensive AOMmethod (Active Oxygen Method) that was previously commonly applied.

The Rancimat method is used as a default parameter in the food industry for quality control, e.g. with the production of oils or fats or with the inspection of incoming goods the processing industry. In addition to oils and fats of vegetable origin, fats of animal origin such as lard, suet or fish oil can naturally also be investigated in terms of oxidation stability with the help of the 743 Rancimat. Antioxidants can be added to foods for the purpose of slowing down the oxidative decomposition of the oils or fats. It is possible to characterize the effectiveness of antioxidants with the help of the 743 Rancimat. This opens up a further area of application for the instrument.

Standards

  • AOCS Cd 12b-92 (AOCS - American Oil Chemists' Society): Sampling and analysis of commercial fats and oils: Oil Stability Index
  • ISO 6886: Animal and vegetable fats and oils - Determination of oxidative stability (accelerated oxidation test)
  • 2.4.28.2-93: Fat stability test on Autoxidation. CDM, Japan
    Swiss Food Manual, Section 7.5.4

Oxidation stability of fatty foods

The 743 Rancimat can also be used for the determination of the oxidation stability of fatty foods. Examples:

  • Instant noodle dishes
  • Nuts, almonds
  • Cookies, biscuits
  • Potato chips and similar snacks

Oxidation stability of cosmetics

In addition to foods, the oxidation stability of aliphatic cosmetics or of cosmetics additives is determined with the help of the 743 Rancimat.

Heater

  • 2 individually heated aluminum heating blocks

Max. number of samples

  • 8 (4 in each block)

Temperature range

  • 50 - 220°C, can be set in increments of 1°C

Temperature correction

  • -9.9 - +9.9°C, can be set in increments of 0.1°C

Max. deviation from the set temperature

  • < 0.3°C

Reproducibility of the set temperature

  • < 0.2°C

Stability of the temperature (max. temperature fluctuation)

  • < 0.1°C

Temperature differential between the individual measurement positions

  • < 0.3°C

Heating up time from 20°C

  • to 120°C: approx. 45 min
  • to 220°C: approx. 60 min

Gas supply

  • Built-in membrane pump

Gas flow range

  • 7 - 25 L/h

Conductivity measurement

  • 0 - 500 µS/cm

Interface

  • RS-232 C

Software

  • Metrodata 743 Rancimat Software 1.1
2.743.0015 743 Rancimat for oils and fats (115 V)
Dimensions in mm (W/H/D) 405/353/466
Dimensions remark Height with accessories
Weight 35.719
2.743.0015 743 Rancimat for oils and fats (115 V)
Parts
8 pcs6.0913.130Measuring vessel cover for stability measuring instruments
1 pcs6.1428.107 Polystyrene measuring vessel for stability measurements
1 pcs6.1429.040Reaction vessel short for stability measurements
8 pcs6.1451.010Foam barrier
4 pcs6.1454.040O-Ring
1 pcs6.1602.145Drying flask cap
1 pcs6.1608.050Drying bottle / 100 mL / GL 45
1 pcs6.1805.010FEP tubing / M6 / 13 cm
10 pcs6.1805.080FEP tubing / M6 / 25 cm
1 pcs6.1808.020Tubing adapter olive / M6 inner
16 pcs6.1808.050Tubing adapter olive / M8 outer
8 pcs6.1808.090Thread adapter M8 outer / M6 inner
24 pcs6.1816.010Silicone tubing 0.22 m
8 pcs6.1819.080Cannula for gas feeding
1 pcs6.1821.040Filter tube
1 pcs6.2041.190Holder for reaction vessels
1 pcs6.2134.100RS-232 cable, 5 m, DB9 – DB9
1 pcs6.2250.000Labels laminated
1 pcs6.2418.100Air tube for oil measurements
1 pcs6.2628.000Holder for reaction vessel
1 pcs6.2724.010Dust filter
1 pcs6.2753.107Reaction vessel cover for stability measurements
1 pcs6.2811.000Molecular sieve
1 pcs6.6033.010743 Rancimat Software 1.1
Options
2.145.0320 Port extension USB - 4xDB9
 
6.1111.010 Pt100 temperature sensor
6.1428.030 Glass measuring vessel for stability measurements
6.1429.050 Reaction vessel long for stability measurements
6.2059.000 Turning ring
6.2125.110 RS-232 cable 3 m, 25-pin – 9-pin
6.2301.060 KCl ion standard 250 mL
6.2324.010 Conductivity standard 100 µS/cm 250 mL
6.2326.000 Silicone oil for stability measuring instruments (50 mL)
6.2418.130 Air tube long for biodiesel measurements
6.2757.000 Air collection tube for stability instruments
6.2821.090 Aspiration filter
6.5706.020 Consumable Kit Rancimat
2.743.0015 743 Rancimat for oils and fats (115 V)
8.000.6069EN

Determination of the oxidation stability of fat-containing solid foodstuffs (english)

AB-087 Analysis of dairy products
AB-141 Analysis of edible fats and oils
AB-204 Oxidation stability of oils and fats – Rancimat method
AB-232

Determination of antioxidant activity in accordance with the Rancimat method

AB-237

Determination of the stability index of solid foods with the Rancimat method

AN-R-001

Oxidation stability of olive oil

AN-R-003

Oxidation stability of rapeseed oil

AN-R-004

Oxidation stability of corn oil

AN-R-005

Oxidation stability of safflower oil

AN-R-006

Oxidation stability of sunflower oil

AN-R-007

Oxidation stability of peanut oil

2.743.0015 743 Rancimat for oils and fats (115 V)
8.000.5023DE Brochure: Food Analysis - Quality control in the food and beverage industry (German)
8.000.5023EN Brochure: Food Analysis - Quality control in the food and beverage industry (English)
8.000.5023ES Brochure: Food Analysis - Quality control in the food and beverage industry (Spanish)
8.000.5023FR Brochure: Food Analysis - Quality control in the food and beverage industry (French)
8.743.3003 Declaration of conformity for 743 Rancimat, english
8.743.3003EN Declaration of conformity 743 Rancimat, English
8.743.6011

Brochure: 743 Rancimat (German)

8.743.6013

Brochure: 743 Rancimat (English)

8.743.8003DE Manual 743 Rancimat, German
8.743.8003EN Manual 743 Rancimat, English