This invention relates to polysaccharide materials and more particularly to microbial cellulose having suitable implantation properties for repair or replacement of soft tissue. The radio includes a radio signal transmitter. A remaining service life indication system has a computer memory device for storing information concerning the canister for determining an end of the service life of a gas mask, a canister andor a cartridge and such devices from the input of various sensors. The cam follower of selected filter engages a cam adjacent to the array. The controller selectively moves the sleeve into a passageway of a valve of the lubricator to protect the valve from a downhole fluid.