Dust‑free laboratories for semiconductors and precision optics have strict particle‑control requirements. Tiny debris falling from measuring fixtures can contaminate samples and invalidate test data. Beyond geometric accuracy, granite square plates used in these environments must satisfy clean‑production criteria. UNPARALLELED® shares how its metrology‑grade granite square plates adapt to dust‑free lab conditions.
Low‑particle performance starts with raw material selection. Low‑grade stone or marble with loose grains and micro‑cracks will shed fine mineral dust under friction, creating clean‑room pollution risks. UNPARALLELED uses proprietary high‑density black granite at around 3100 kg/m³. Its dense, uniform crystal structure has few internal voids, features chemical inertness and hardly generates particle shedding, eliminating substrate‑derived contamination.
Raw blanks receive full cleaning and screening at our 20 000 m² stone storage yard before precision machining. Surface dust and cutting residues are completely removed to rule out embedded impurities that may fall out later. All critical finishing processes are completed inside our constant‑temperature‑humidity dust‑free workshop equipped with anti‑vibration facilities, preventing external abrasive particles from being trapped on working surfaces.
Special lapping delivers closed, smooth pore‑free surfaces together with optimized edge chamfering, minimizing chipping risks and allowing easy clean‑room wiping. Every finished square plate undergoes comprehensive inspection with traceable calibrated instruments, verifying flatness, perpendicularity and low‑particle performance against international standards.
Backed by ISO 9001, ISO14001, ISO45001, CE certifications and rich experience serving high‑end research institutions, UNPARALLELED strictly rejects porous inferior stone. From raw blank treatment through final verification, full‑chain quality control enables granite square plates to serve as stable reference benchmarks without introducing secondary particle pollution for dust‑free laboratories. 