Adjective
ultra-pure (comparative more ultra-pure, superlative most ultra-pure)
Alternative form of ultrapure
The liquid used is typically ultra-pure, deionised water, which provides for a refractive index above that of the usual air gap between the lens and the wafer surface. Source: Internet
Silicon was chosen because a commercial infrastructure with mature processes for creating defect-free, ultra-pure monocrystalline silicon already exists to service the semiconductor industry. Source: Internet
If ultra-pure products are the goal, then further chemical separation must be applied. Source: Internet