<https://sciteq.com/product/sigma-impact-tester/#webpage>
<http://schema.org/description>
"The frictionless vacuum system of the SIGMA Impact tester is invented by SCITEQ. Complies with the standards EN 744, EN 1411, ASTM D 2444, ISO 3127"
<https://sciteq.com/de/product/sigma-impact-tester/>