Grape sample prep guide – tannin, colour and phenolics

Grape sample prep guide - tannin, colour and phenolics

Retsch GM 200

Grape sample preparation

The excellent knife mill GRINDOMIX GM 200 is the ideal instrument for grinding and homogenizing grapes.

A published AWRI method for the sample preparation of grapes recommends the use of the knife mill GRINDOMIX GM 200 from RETSCH “For the samples 200-250 g: Retsch Grindomix GM200 Homogeniser (Retsch GmbH & Co KG, Germany), fitted with a floating lid.

The homogeniser used must be capable of breaking up grape seeds so that the seed tannin can be extracted…the Retsch is easier to use. A general kitchen blender is not powerful enough.”

The knife mill GRINDOMIX GM 200 is the ideal instrument for grinding and homogenizing foods and feeds. It allows to process sample volumes up to 0.7 liters quickly and reproducibly.

With two sharp, robust blades and a powerful motor, it is ideal for homogenizing substances with a high water, oil or fat content as well as for grinding dry, soft and medium-hard products. A wide selection of lids and containers allows for adaptation of the mill to individual application requirements. The GRINDOMIX GM 200 meets and exceeds all special laboratory and analytical requirements and is a professional device superior to any commercial household mixer.

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