The Council for Geoscience (CGS) invites potential suppliers to provide quotations for the supply of monitoring probes/sensors of dissolved carbon dioxide and methane CH4 in groundwater. 1. Probe case and internal battery pack with 200m cable. The sensors/probes must be portable and be able to measure the following parameters: • pH; • Electrical conductivity; • Total dissolved solids; • Temperature; • Redox; • Dissolved oxygen; • Carbon dioxide; • Methane; • Total dissolved gas; • Depth reference; - Qty: 1; 2. Probe case and internal battery pack with 100m cable. The meter must be portable and be able to measure the following parameters: • pH; • Electrical conductivity; • Total dissolved solids; • Temperature; • Redox; • Depth reference; • Fluorescein; • Rhodamine; - Qty: 1; 3. Probes reader (rugged tablet) and software; Qty: 1; 4. Manta Mobile Bluetooth and mantalink App; Qty: 2; 5. Calibration kits; Qty: 1; 6. Telemetry system; Qty: 1. (Ausschreibung №95029859de)