HPQ = High Purity Quartz = High Purity Silica = High Purity Silicon Dioxide (SiO2)
Quartz, also known as silicon dioxide or silica, SiO2, is one of earth’s most abundant minerals and occurs in many different geological settings. It is best-known for its use in glass manufacturing, but also has uses across a variety of industries requiring differing levels of SiO2 content. It is a necessary element for the production of any modern gadget – for example, mobile phones.
HPQ is usually a white powder. It can be defined as having at least 99.995% SiO2 content. However, the main focus is always on the non-SiO2 content of the quartz.
HPQ is broken down into different categories depending on the impurities found in the quartz. 5N has a purity of ‘five nines’ – 99.999%. i.e contains 10 parts per million (ppm) of impurities (0.001%), 6N is six nines – 99.9999%. i.e contains 1 part per million (ppm) of impurities (0.0001%). The impurity level is highly critical for high tech industries. For buyers, even ten ppm purity difference matters. That is why 99.998% is much more expensive than 99.997%. Higher purity means lower impurities content of critical impurities like P, B, Li, Al, etc.
HPQ is the basic material for electronic, optical, lighting and solar (PV) industries. It is used in solar elements, semiconductors, optical fibres, lenses, crucibles, telecommunications, etc.