Castrol Hysol MB 50 is a high performance soluble metal working fluid, which is formulated without chlorine or formaldehyde releasing agents . It contains a unique additive package that works in synergy to enhance machining performance and surface finish, provide excellent product stability, improve bio-resistance properties and lower the overall operations costs. Hysol MB 50 is suitable for large central systems and single sump machines. Hysol MB 50 is especially designed for machining of ferrous and aluminium alloys.