DURACUT-N is a MULTI-PURPOSE SOLUBE CUTTING OIL manufactured from carefully selected paraffin base oils and proprietary emulsifiers which have a bearing on the clarity and stability of the emulsion even with water of 1000 ppm hardness. A stable milky white emulsion is prepared by adding the oils to water, with continuous stirring. DURACUT-N gives the desired cooling characteristics, provides protection and lubricity for the cutting operation with good finish of work piece and longer life for tools. DURACUT-N is also fortified with appropriate biocides to keep control of bacterial growth.