Rapid Oil Extraction Apparatus

Test and configuration

Measured output / function

Solvent-extractable oil or finish (%)

Parameters selected for the method

Solvent, sample mass, temperature and duration

Verification points

Balance, temperature and solvent blank

Listed methods are application references. Suitability is established by assessing the selected hardware, current method and calibration together.

Test parameters for the reviewed method

Values belong to the stated source edition. Test recipe, fixture and delivered instrument configuration are selected together.

GB/T 6504:2017 · 5.1.4-5.1.6, Annex C.4-C.6

• Fibre oil-content Annex C rapid pressure extraction: approximately 2 g specimen, balance readability 0.1 mg and temperature control ±1 °C; initial solvent soak 10 min. Classical Method A requires at least 2 h reflux; the instrument's approximate 15 min cycle is not every method's duration.

GB/T 6977:2008 · 1–7.5 read; ethanol application: 3.5, 4.1, 5(a–d), 6(a), 7.1–7.2, 7.5

• Scoured-wool ethanol extractives: three separate 5 g specimens; pre-dry at 105 ± 2 °C for 2 h, then to constant mass. Soxhlet with a constant-temperature water bath; 95% ethanol by mass, at least 20 reflux cycles at approximately 6–7 cycles/h. Dry the extract flask at 105 ± 2 °C to constant mass.
• Auxiliary analytical balance: 200 g capacity, 0.001 g graduation; test weighings to 0.001 g. Constant mass: the difference between consecutive weighings does not exceed 0.05% of the later mass. The balance and drying oven are separate laboratory equipment; these are not instrument weight or total electrical load.
• Configuration limit: the model’s 2 g / approximately 15 min rapid extraction data are not equivalent to this Soxhlet method. A suitable 5 g Soxhlet configuration, duration and auxiliary equipment must be verified for GB/T 6977. The standard’s ash and alkali-insoluble tests require separate apparatus.

Control and recording specification

The following are method-specific software/recording requirements; delivered software modules are defined by the order scope.

• Method code and edition, specimen ID, operator and selected test parameters are linked to the record.
• The calculation and endpoint are defined by the selected method edition; instrument signals and operator assessments are kept distinct.
• Raw measurements, units, valid/invalid test flags and the reported result remain traceable.
• Calculations are checked against known inputs and an independent calculation; sensor channels are checked against calibration values.
• GB/T 6977:2008 ethanol recipe: E = 100 × (m2 − m1) / m3; m2 is the flask after extraction, m1 the empty flask and m3 dry wool mass. Retain three replicate results and constant-mass weighings; calculate to three decimals and round the mean to two under GB/T 8170. Ash calculation is outside this module’s scope.