This tender invites bids for the supply of calibration gas cylinders and advanced medical equipment including an autorefractometer with keratometry and motorized table in Karachi under Pakistan Petroleum Limited. The procurement covers specialized gas cylinders essential for calibration purposes and precision ophthalmic diagnostic devices, ensuring high standards for medical and technical operations in the region. The supply involves delivering high-quality calibration gas cylinders that meet industry standards for safety and accuracy, alongside sophisticated medical instruments designed for eye care diagnostics. Karachi's logistical and technical environment demands reliable suppliers capable of timely delivery and compliance with technical specifications. The engineering and handling of gas cylinders require adherence to safety protocols, while the medical equipment must meet calibration and performance benchmarks. Bidders should ensure they hold valid PEC registration relevant to the supply category and maintain an active FBR ATL status for the fiscal year 2025-26. Compliance with tax and regulatory requirements is mandatory to avoid disqualification. It is advisable to review the tender documents carefully for Earnest Money and Call Deposit Receipt (CDR) conditions, as well as any specific submission instructions. The submission deadline is set for 20 April 2026 at 15:00 hours, with bid opening scheduled 30 minutes later. Bids must be submitted online through PPL's e-procurement portal accessible at https://eprocurement.ppl.com.pk. The physical address for correspondence is Senior Manager Procurement, Pakistan Petroleum Limited, PIDC House, 4th Floor, Dr. Ziauddin Ahmed Road, Karachi. Pro-Tip: Ensure your Technical Bid clearly addresses all specifications and attach the required CDR with the Financial Bid. Missing or incomplete documentation is a common cause for rejection. Also, verify the latest amendments or extension notices on the PPL portal before submission to avoid last-minute surprises.