The originally Dutch Cone Penetration Test (CPT) technology delivers important measurement data for estimating soil behaviour and for making reliable foundation designs in the construction industry. Therein the quality of the measuring instruments and the measurements are a determining factor. As of 23 January 2020, the calibration laboratory of A.P. van den Berg in Heerenveen, the Netherlands is the proud bearer of the ISO 17025 accreditation, awarded by the Dutch Accreditation Council. With this, the company has taken a unique global position as a supplier of CPT measuring instruments. A.P. van den Berg provides reliable and accurate CPT cones, now supported by a validated calibration process. Read more.