The product from a crystallizer is to be separated from the liquor using a centrifuge. The concentration of the crystals is 6.5 per cent and the slurry feed rate to the centrifuge will be 5.0 m³/h. The density of the liquor is 995 kg/m³ and that of the crystals 1500 kg/m³. The viscosity of the liquor is 0.7 mNm^–2s. The cut-off crystal size required is 5 μm. Select a suitable type of centrifuge to use for this duty.