HWBF hydraulic fluid where any elements to be mixed into the medium in order, for example, to improve lubricity and increase corrosion protection are added as very small droplets. Micro-emulsions are associated with a far higher degree of dispersion — even reaching the colloid dispersion range — than commercially available macro-emulsions. Micro-emulsions may only be used instead of mineral oil in power hydraulic systems if due consideration is paid to the design of the hydraulic devices involved. Concentrates
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