North-American customers can contact one of the following companies:

Geophysics GPR International Inc.
100-2545 Delorimier street, Longueuil (Québec), Canada
Phone: +1 450 679 2400
Email: info@geophysicsgpr.com
Web: www.geophysicsgpr.com/en/

Micro Precision Calibration
Phone: +1 530 278 9110
Email: gv-contact@microprecision.com
Web: www.microprecision.com

Asian customers can contact our partner laboratory in Singapore:

Absolute Instrument Systems (Pte.) Ltd.
11 Kallang Place #06-03, 339155 Singapore
Phone: +65 6296 8012
Email: sales@aisys.com.sg
Web: www.aisys.com.sg

For all the other customers please fill in the following Calibration Form and send the instrument(s) to:

Syscom Instruments SA
Rue de l'industrie 21, CH-1450 Sainte-Croix (VD), Switzerland
Phone: +41 24 455 4411
Email: info@bartec-syscom.com
Web: www.syscom.ch