Composition of soluble oils:

- Base oil(s)
- Surface active agents (dispersants)
- Water
- Co-solvents (as required)
- Additives:
	adhesion agent
	anti-corrosion for various metals
	extreme-pressure additives
	preservative agents (biocides: bactericide and fungicides)
	anti-foaming agent

a) Emulsions

Dispersion of oil droplets in water, milky and opaque in appearance; average droplet size is in the order of a few microns (1 to 10µm). They are preferably used when high lubricity is required.

Selecting the base oil: the chemical nature of the base oil (mineral or synthetic) as well as its content, allow the adherence and lubricity of the fluid to be optimized (notably for aluminum machining)

Selecting additives:
- Anti-corrosion: depending on the nature of the metal being machined (cast iron, steel, aluminum, copper alloys, etc.)
- Biocides: the selection of more or less slow bactericides and fungicides, selected based on severe tests, allows the stability of the emulsion in terms of micro-organisms to be guaranteed (supplemented by follow-up of the installations in service)
- Surface active agents: the combination of several chemistries in order to obtain emulsions that are stable to use and to adapt the products to different water qualities.

Compliance with various European directives: the absence of secondary amines, glycol ethers, triazine, etc.

b) Micro-emulsions

Dispersion of very fine oil droplets in water (in the order of 0.01 to 1µm), opalescent and translucent in appearance. They are preferably used when cooling capacity is needed more than lubricity.

They are obtained through a high rate of surface active agents (dispersants).

c) Aqueous solutions

True solutions of synthetic lubricants in water, limpid and transparent in appearance, characterized by exceptional cooling and anti-corrosion characteristics. They are used mainly in precision grinding operations and for various treatment products.