Open Access
Review
Table 2
Evolution of Residual hexane contents in oil, meal and air.
In the nineteens | 2020 | |
---|---|---|
Residual hexane in oil | 400–500 ppm | < 20 ppm |
Residual hexane in meal | 300–400 ppm | < 250 ppm |
Residual hexane in air (out of mineral oil system) | 50/70 gr/m3 | < 10–7 gr/m3 |
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