Calibration, validation, and environmental-audit services, calibration of pressure, temperature, electrical, flow, and dimensional instruments, plus validation of SCADA systems, HEPA filters, and laboratory equipment, are the specialty of Prism Test & Measure Pvt Ltd, a leading NABL-accredited calibration laboratory and service provider. It also offers analytical testing for food, pharmaceuticals, materials, plastics, and non-destructive testing, along with Gujarat Pollution Control Board (GPCB)-approved environmental audits. Founded in 2004 and headquartered in Ahmedabad, it operates from a modern facility in Vatva with more than 500 master instruments, serving manufacturing, pharmaceutical, healthcare, oil-and-gas, and food-processing customers.