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Column:

—  material: fused silica;

—  size: l = 30 m, Ø = 0.25 mm;

—  stationary phase: poly(dimethyl)siloxane R (film thickness 0.25 µm).

Carrier gas: helium for chromatography R.

Flow rate: 1 ml/min.

Split ratio: 1:100.

Temperature:

290

Detector

290

Injection port

280

0 - 15

Column

Temperature

(°C)

Time

(min)

Detection: flame ionisation.

Injection: 1 µl of test solution (b) and reference solution (b).

System suitability: reference solution (b):

—  resolution: minimum 3.5 between the peaks due to α-tocopherol and α-tocopheryl acetate.

Limits:

total: maximum 4.0 per cent;

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