Natural Resources Institute Finland (hereafter referred to as "Luke") requests your tender for automated soil gas flux systems with this Call for Tenders and its annexes.

Luke is planning to procure an automated soil gas flux system for measurements of soil gas fluxes in low vegetation in 2025 to Ruukki experimental station (Siikajoki, Finland). All devices will be used in field conditions in Finland over three seasons (spring, summer, fall) for the purposes of forest and agricultural studies. During spring, summer and fall the temperature may drop below freezing point. Therefore, the chambers and other equipment must withstand conditions below 0°C. Devices/systems will be used with Luke's existing trace gas analyzers, specifically Licor LI-7810 and LI-7820 and therefore the systems offered must be compatible with them. Devices must also be compatible with other analyzers with or without modifications.

The procurement includes:

A system including 4 portable opaque chambers for a measurement set-up capable to measure with vegetation up to 20 cm, 1 multiplexer, 1 datalogger, 1 cellular communication system datalogger and additional hardware required to form GHG measuring system with analysers (analysers not included). There also needs to be a capability to monitor and configure the system remotely over cellular network.

Option 1: Procurement includes an option for Luke to purchase 4 opaque chambers within the next four years.

Option 2: Procurement includes an option for Luke to purchase 4 transparent chambers and PAR sensors within the next four years.

Option 3: Procurement includes an option for Luke to purchase 2 additional multiplexers with dataloggers within the next four years.

Option 4: Procurement includes an option for Luke to purchase 10 kits of parts (necessary power and communication cables, tubes, connectors etc. to connect chambers with multiplexer within 15 meter radius) to connect custom or 3rd party chamber to multiplexer. The tenderer is not required to offer this option.

The supply purchase contract will be made with one supplier.

The subject of the procurement is described in more detail in procurement object criteria and other procurement documents.