SPR’s quality control team boasts over 50 years of experience in the superabrasives industry. Regular calibrations of all our quality control verification equipment ensures superior accuracy. SPR maintains retention samples of all manufactured lots for full product traceability. Our testing expertise complies with FEPA and ANSI standards for trustworthy and efficient results. 

SPR’s lab testing services cover everything you need: particle size analysis, shape analysis including Coulter laser particle analysis, VDiamant DiaInspect devices and software for particle and surface analysis and Retsch AS200 sieving machines. And test sieving and shape sorting. 

Whatever your industrial diamond and CBN powder classification and sorting needs may be, SPR has you covered. Meticulous attention to detail ensures grain size, shape, magnetism and detection of  impurities. Correct electroplating preparation tailored to your requirements helps our customers create the perfect product. Trust our innovative and experienced team for desired results completely tailored to your needs.

Quality Control

SPR’s commitment to excellence is reflected in our rigorous quality control process. We leave no stone unturned when it comes to ensuring the highest standards for our products. From the moment raw materials arrive to the moment our SPR products leave our facility, every step is meticulously tested and analyzed, adhering to European FEPA and ANSI standards.

Our comprehensive quality control measures include:

  • Image Processing
  • Sizing
  • Morphology Analysis
  • Magnetic Susceptibility Test
  • Colourimetry
  • Mechanical Fracture Tests

At SPR, we pride ourselves on delivering exceptional quality products. Our commitment to excellence is ingrained in every aspect of our quality control process, allowing us to consistently provide you with superior products that meet your expectations.

Quality Reports

Comprehensive documentation

Each of our superabrasive products is accompanied by a detailed quality report that provides a complete overview of the product’s characteristics and specifications.


We believe in providing transparent and comprehensive quality information to our customers. We want you to have complete peace of mind when it comes to the quality of our products.

Performance validation

The quality report not only provides detailed information but also confirms that SPR’s products undergo rigorous performance and quality tests. This ensures that our products consistently meet or even exceed the highest industry standards.