Sartolab ® RF|BT vacuum filtration units are available as ready-to-use disposable 50 mL, 150 mL, 250 mL, 500 mL and 1,000 mL systems including receiver bottles, or as Bottle-Top-only system in 150 mL, 250 mL, 500 mL and 1000 mL. Sartolab ® RF|BT units can be used in combination with the Sartolab ® MultiStation for hands-free parallel