Quality Control – Research & Development

SIGMA in-house laboratory is equipped with modern apparatus to test both raw materials and finished products in compliance with international reference standards.

In addition to this daily quality control, SIGMA highly qualified personnel made up of chemists and geologists guarantee on-going research into product innovation and services offered to improve existing products, develop new grades and satisfy customers’ specific requests.

X-ray fluorescence spectroscopy

X-ray fluorescence spectroscopy

Polarized light microscopy

Polarized light microscopy

RUL (Refractoriness under load) & Creep in compression

RUL (Refractoriness under load) & Creep in compression

X-ray diffraction

X-ray diffraction

Ultrasonic testing

Ultrasonic testing

Apparent porosity & bulk density

Apparent porosity & bulk density