The BVC control features a powerful whisper-quiet VACUUBRAND® chemistry-design vacuum pump, eliminating the need for central vacuum supply. Potentially biohazardous materials can be contained in a local area. The pump is turned on and off automatically on demand when using the VHCPRO which further reduces the noise level. An easy to clean touch panel adjusts and indicates the vacuum level switchpoint. This provides exactly the aspiration power you need, when you need it. Available with either a 4 liter polypropylene, or 2 liter bleach resistant glass bottle.