INSTRUCTIONS TO BIDDERS Reference: LITB-2025-9198713 Title : Invitation to bid for Tandem mass spectrometry UNICEF Mongolia invites qualified suppliers to submit offers in response to this Invitation to Bid (ITB). Please read and follow the instructions below carefully to ensure your submission is compliant. Reference Requirement Bidders must include the reference number LITB-2025-9198713 clearly in the subject line of their offer and on all related documents. Proposal Form Bidders are required to complete and sign the Proposal Form (Pages 3–5). In the questionnaire section, if you answer “NO” to any question, please provide a detailed explanation. Submission Deadline Offers must be received no later than 11:00 AM (Ulaanbaatar time), 1 Aug 2025. Late submissions will not be considered. The deadline for receipt of any questions is 25.07.2025 11:00 (Mongolian time). Submission Method All offers must be submitted via email to: [email protected]  (Maximum email size: 10MB) Delivery terms : DDP ulaanbaatar Payment Terms UNICEF’s standard payment term is within 30 calendar days from the date of receipt of the invoice.