TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The composition has an iron concentration of less than 50 ppm. Preferred Components: The total elemental contaminant level is less than 20 ppm. The acid is hydrochloric acid, sulfuric acid and/or nitric acid.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: In the composition, at least 90 wt.% of the acid-washed graphite particles and the carbon black particles have particle sizes of less than 10 mu m. The aqueous carrier comprises water. In the composition, all components are chemically compatible with acetonitrile. The composition comprises: 0.03-1 wt.% of the acid-washed graphite particles; 0.40-6 wt.% of the carbon black particles; 0.02-0.45 wt.% of the polymeric dispersant; 1-8 wt.% of the acrylic binder; 1-8 wt.% of the polyvinylpyrrolidone binder; 0.04-1.5 wt.% of the defoamer; and 75.05-97.43 wt.% of the aqueous carrier, where the composition is devoid of organic solvents, water-soluble organic co-solvents or alkylene glycols. The composition has a viscosity of 5-25 centipoises at a shear rate of 1 seconds-1 and 3-10 centipoises at a shear rate of 100 seconds-1. Preferred Method: The method further comprises: washing graphite particles in an acid to form the acid-washed graphite particles, where the washing step of the graphite particles comprises saturating the graphite particles in the acid to form a washing solution, agitating the washing solution containing the graphite particles, filtering the graphite particles from the washing solution, and drying the filtered graphite particles to form the acid-washed graphite particles; repeating the saturating, agitating and filtering until the washing solution has a pH of less than 5 after the graphite particles are filtered from the washing solution; and preparing a letdown phase in the third vessel before the mixing step in the third vessel, where the letdown phase comprises 40-60 wt.% of the carbon black grind phase, 0.5-5 wt.% of the graphite grind phase, 1-5 wt.% of the acrylic binder added to the letdown phase in addition to any acrylic binder already present in the carbon black grind phase, 1-5 wt.% of the polyvinylpyrrolidone binder added to the letdown phase in addition to any polyvinylpyrrolidone binder already present in the carbon black grind phase, and 25-57.5 wt.% of the water added to the letdown phase in addition to the water already present in the carbon black grind phase and the graphite grind phase. The grinding step of the carbon-black grind phase comprises grinding until at least 90% of the carbon black particles have a particle size of less than 10 mu m, and the grinding of the graphite grind phase comprises grinding until at least 90% of the graphite particles have a particle size of less than 10 mu m. The carbon black grind phase comprises: 1-10 wt.% of the carbon black particles; 0.05-0.5 wt.% of the polymeric dispersant; 0.1-5 wt.% of the acrylic binder; 0.1-5 wt.% of the polyvinylpyrrolidone binder; 0.1-2.5 wt.% of the defoamer; and 77-98.65 wt.% of the water. The graphite grind phase comprises: 5-20 wt.% of the acid-washed graphite particles; 0.1-3 wt.% of the polymeric dispersant; and 77-94.9 wt.% of the water.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The stabilizing ingredient comprises: at least one polymeric dispersant; at least one acrylic binder; at least one polyvinylpyrrolidone binder; and at least one defoamer. The polyvinylpyrrolidone binder comprises first polyvinylpyrrolidones with average molecular weight of 40000-80000 Dalton and second polyvinylpyrrolidones with average molecular weight of 1-1.5x 106 Dalton. EXAMPLE - Typical composition comprised (in wt.%): carbon black (2.68); hydrogen chloride-washed graphite (0.19); Solsperse 46000 (RTM: Hyperdispersant) (0.18); Joncryl 2660 (RTM: Film forming rheology controlled acrylic emulsion polymer) (2.54); Joncryl 624 (RTM: Soft film forming Rheology controlled acrylic emulsion polymer) (2.54); Luvitec PVP K30 (RTM: Polyvinylpyrrolidone) (2.54); Luvitec PVP K90 (RTM: Polyvinylpyrrolidone) (2.54); 1-butanol (0.95); and water (85.85).