Corrigendum Against Tender Enquiry No: 14-Vi/Sga(1147)23-Pb/T-74 For Particulate Matter (Pm) Federal Reference Method (Frm) Sampler Date Of Submission: 30Th Oct 2025 Up To 3:00 Pm. (Ist) Date Of Opening: 31St Oct 2025 At 3:00 Pm. (Ist)