Rockwin has excellent Flow Calibration Facility which is at par with the best in the world. This facility is accredited by NABL (National Accreditation Board for Testing and Calibration Laboratories), Department of Science & Technology, Government of India, and in accordance with ISO / IEC 17025.

NABL has affiliation with other bodies across the world through ILAC and APLAC.

Present calibration facilities for flowmeters at Rockwin Calibration Laboratory are: