This tender invites bids for hiring a proficiency testing provider to conduct pressure calibration, temperature calibration, and volume flow proving services at regional meter shops including ISD, MUL, and FSD. The scope includes ensuring accurate and reliable calibration services to maintain operational standards. The procurement is conducted through EPADS with a bid security of Rs 80,000. Interested suppliers/manufacturers may obtain tender documents free of cost upon submission of valid GST, NTN, and Professional Tax Clearance Certificates. The contract duration and performance period will be as per tender terms.