| VQ601/1 | SGX Sensortech | VQ1 PELLISTOR, VQ600 HEAD, METRI | - | 7,992 | 
                                                    
                            | VQ603/1 | SGX Sensortech | VQ3 PELLISTOR, VQ600 HEAD, METRI | - | 3,870 | 
                                                    
                            | VQ635M/2 | SGX Sensortech | VQ35 PELLISTOR, VQ600 HEAD, 0.5" | - | 2,844 | 
                                                    
                            | IR601/1 | SGX Sensortech | IR SENSOR HEAD FOR 0-5%CO2 - M20 | - | 6,390 | 
                                                    
                            | IR601/2 | SGX Sensortech | IR SENSOR HEAD FOR 0-5%CO2 - 1/2 | - | 8,064 | 
                                                    
                            | IR602/1 | SGX Sensortech | IR SENSOR HEAD FOR 0-5%/100% HC | - | 6,858 | 
                                                    
                            | CCS801B-COPR5K | ams | CCS801B-COPR5K DFN4 LF T&R | - | 8,280 | 
                                                    
                            | CCS811B-JOPR5K | ams | CCS811B-JOPR5K LGA10 LF T&R | - | 6,228 | 
                                                    
                            | 110-109 | SPEC Sensors, LLC | SENSOR GAS CO ANALOG CUR MOD | - | 7,572 | 
                                                    
                            | 110-304 | SPEC Sensors, LLC | SENS GAS HYD SULF ANALG CUR MOD | - | 6,192 |