A blending device (2) for blending a sample held in a sealable open mouthed sample bag comprises a bag receiving portion (6). The blending device (2) also includes a kneading arrangement (20) for acting on a wall of a sample bag (8) disposed in the bag receiving portion (6) so as to blend a sample contained in the bag (8). A bag manipulation arrangement (13) or a bag support (28) may also be provided.

A blending device (2) for blending a sample held in a sealable open mouthed sample bag comprises a bag receiving portion (6). The blending device (2) also includes a kneading arrangement (20) for acting on a wall of a sample bag (8) disposed in the bag receiving portion (6) so as to blend a sample contained in the bag (8). A bag manipulation arrangement (13) or a bag support (28) may also be provided.