A novel canola variety designated 45S51 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. 1 to 5 parts by weight of a metal salt of a thiol having the general formula nM per 100 parts by weight of the base rubber. The conducting components of the device are positioned outside the tank and its reflector is positioned in the tank in the gas volume to be measured, the components and reflector being optically coupled by a window that is situated in the tank wall. The modulator notifies the controller about whether the pre-stage output DC voltage reaches a target level. The tether line is coupled to the coiled electrode at a point proximal the distal end, and the leading end extends distal the distal end. The instrument is further adapted to drive the head of the first fixating element and second fixating element into the vertebra and lock the first fixating element and second fixating element with respect to the spacer to prevent extrusion from the spacer.