Abstract: A preassembled collection of disposable mixing apparatus and constituent components needed for the vacuum mixing and preparation of bone cement and packaged as a single disposable kit is disclosed. The kit includes a contoured storage tray, ampules of liquid cement monomer, packets of powder cement copolymer, a small portable vacuum pump, connecting tubing with a vacuum indicator, a mixing cartridge, a cartridge cap and agitator, an assortment of connectable cement nozzles, and a funnel attachment. The kit can be packaged as a single unit for convenient and efficient use in the sterile environment of an operating room. The disposable telescoping mixing cartridge of the kit employs a telescoping mixing cartridge with a vacuum release mechanism.