Yes, Ultrasol X-4304 is specifically formulated to remain stable in hard water conditions (75–450 ppm CaCO₃), minimising issues like soap scum and emulsion breakdown.


Discover the next generation in soluble metalworking fluids with Ultrasol X-4304, a cutting-edge semi-synthetic coolant engineered for precision, longevity, and compliance.
Free from boron, formaldehyde-releasing biocides, and chlorinated paraffins, this fluid delivers outstanding machining results while supporting a safer and more sustainable workshop environment.
Ultrasol X-4304 forms a stable micro-emulsion in both soft and hard water, offering superior tool life, excellent surface finishes, and exceptional cleanliness while keeping foam under control and bacteria at bay.
Ideal for machining a wide range of ferrous and non-ferrous metals including stainless steel, titanium, aluminium, copper alloys, & nickel alloys.
Optimised for high-pressure coolant systems, reducing the need for anti-foaming additives & improving overall efficiency.
Boron-free prevents sticky residues on machines & components, enhancing cleanliness & reducing maintenance downtime.
Formaldehyde-free formula enhances operator safety and environmental compliance while delivering high levels of biostability.
Stable in hard water minimising soap & scum formation, maintaining fluid integrity even in difficult water conditions.
Ultrasol X-4304 Technical Data Sheet 240kb
Ultrasol X-4304 Safety Data Sheet 240kb
Yes, Ultrasol X-4304 is specifically formulated to remain stable in hard water conditions (75–450 ppm CaCO₃), minimising issues like soap scum and emulsion breakdown.
The recommended dilution range is 4% to 10%, depending on your application. For general use, a 5% dilution offers a good balance between cooling, lubrication, and cost-efficiency. See how our Mixtron Soluble Oil Doser can help keep your dilution rate consistent!