Water is separated from an emulsion of water and oil by passing the emulsion through a bed of superabsorbent polymer granules which break the emulsion and absorb water from the mixture of water and oil. The LED strobe notification device is configured to generate an output at two or more candela settings and is configured to generate the output at the two or more candela settings having a human-perceived pulse duration with a fixed width. The bandwidth allocated to each call over the satellite link may be varied during the call according to demand either from the relevant application or from the network management center. A non-flanged post guide is provided located proximate to the take-up reel for increasing a length of the tape path and for permitting the flanged guides to be located remotely from the cartridge and take-up reels so that the flanged guides are not located in proximity to the cartridge or take-up reels. The negative electrode includes an alloy of Si, a first element and a second element.