UNDP Office of Procurement (OP), Crisis, Climate and Infrastructure Team (CCIT) hereby invites prospective bidders to submit a bid in accordance with the General Conditions of Contract and the Schedule of Requirements as set out in this Invitation to Bid (ITB).The purpose of the ITB is to procure Three (3) sets of Complete Automatic sounding Upper Air Systems including Three (3) hydrogen generation plant and (3) complete manual sounding upper air systems along with delivery, installation and training at Songwe, KIA and Mwanza sites in Tanzania.Refer to Table A1 for the list of Equipment. The technical specifications of each equipment are provided in Part B—Technical Requirement of this section.Table A1: No. Description and Type of Equipment Quantity 1 COMPLETE AUTO SOUNDING SYSTEM 3 2 COMPLETE MANUAL SOUNDING SYSTEM 3 3 HYDROGEN GENERATION PLANTS WITH ITS STORAGE TANKS 3 4 METEOROLOGICAL RADIO SONDE 2,400 5 METEOROLOGICAL BALLON 2,400 Please indicate whether you intend to submit a bid by creating a draft response without submitting directly in the system. This will enable the system to send notifications in case of amendments of the tender requirements. Please take note that pre-bid conference for the ITB will be conducted as follows:Time and time zone:  1000 Hr AM. CETDate: 14th August 2025Please email [email protected] for details.The focal point for the arrangement is:  Mr. Haroon Gul-OP/CCITThe pre-bid conference attendance is not mandatory.Please indicate whether you intend to submit a bid by creating a draft response without submitting directly in the system. This will enable the system to send notifications in case of amendments of the tender requirements. Should you require further clarifications, kindly communicate using the messaging functionality in the system. Offers must be submitted directly in the system following this link: http://supplier.quantum.partneragencies.org  using the profile you may have in the portal. In case you have never registered before, you can register a profile using the registration link shared via the procurement notice and following the instructions in guides available in UNDP website: https://www.undp.org/procurement/business/resources-for-bidders.  Do not create a new profile if you already have one. Use the forgotten password feature in case you do not remember the password or the username from previous registration.