NEOTECH SOST-24

UP-OCC Solid Silver Indoor Wiring Cable. 0.20 sq. mm conductor. Teflon insulation

Sold by the metre in a single piece of the purchased quantity

Neotech's SOST type wire is a 99.9998% high purity UP-OCC silver solid core wire, coated in heat-resistant blue Teflon. It can be used as loudspeaker, power and general connection wire.

What is UP-OCC?
The UP OCC process for refining copper was developed and patented by Professor Ohno of the Chiba Institute of Technology in Japan. This manufacturing process is incredibly popular for the production of wires and cables for the audio/video industry.
UP OCC stands for Ultra-Pure, Ohno Continuous Casting. In conventional processing, hot molten copper is poured into a cooled die for extrusion, resulting in a multiple, fractional crystal structure. Oxygen-free copper (OFC) has undesirable effects that lead many to use more expensive materials such as silver. The OCC process uses a heated mould for casting and extrusion, with cooling in a separate process. The result is a larger crystal size and higher purity, around 6N, 99.9998%! Looked at another way, traditional copper has oxygen impurities of 200 to 500 parts per million (PPM), whereas in traditional OFC copper this is reduced to less than 10 ppm. With the OCC process, this figure is halved to less than 5 PPM of oxygen and less than 0.25 PPM of hydrogen (compared to 0.5 PPM for OFC). With these results, the OCC process creates an ‘ultra-pure’ copper.