Vimal Microns Ltd. Manufactures Baryte with 6+ Hegman Finish, Vimcro Baryte 10. Vimal Microns Ltd. Is an ISO 9001 certified company. The Baryte with 6+ Hegman Finish features Volatile Matter: 0.3 percent, pH of Sat. Solution: 8.0, Specific Gravity: 4.5 and Loss On ignition: 0.1 percent.