no gas sensor for pollution research

{"cid":"91211450","title":"MNO-LO 4-electrode Electrochemical Nitric Oxide (NO) Gas Sensor for Ambient air Quality Monitoring Emission & Pollution Research","imgUrl":"https:\/\/img.chinax.com\/nimg\/96\/c2\/055d20d12169df3c3f9a00ec94fc-200x200-1.jpg","attrs":{"Price":"Negotiable","Model Number":"MNO-LO","Minimum Order Quantity":"1PCS","Delivery Time":"5-8 work days","Place of Origin":"USA","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"5000pcs","Packaging Details":"Paper box","Operating Principle":"4-electrode electrochemical","Measurement Range":"0-300 ppb NO","Maximum Overload":"500 ppb NO","Zero Offset":"0-100 ppb NO equivalent","Baseline":"\u00b1 3000 mV","Bias Voltage":"+350 mV"}}

{"cid":"91188394","title":"KGD-WQ-503 Portable Emission Testing System PEMS for High Altitude Working Conditions and Wide Particle Size Range","imgUrl":"https:\/\/img.chinax.com\/nimg\/8b\/77\/b9baf261075cf700a85dada43a25-200x200-1.jpg","attrs":{"Model Number":"KGD-WQ-503","Minimum Order Quantity":"1PCS","Delivery Time":"5-8 work days","Certification":"CE","Place of Origin":"CHINA","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Supply Ability":"1000 Piece\/Pieces per Week negotiable","Packaging Details":"each unit has individual box and all boxes are packed in standard packages or customers requests available","Particle Size Range":"23nm - 2500nm","Accuracy":"\u2264 \u00b110%","Rise Time":"\u2264 1s","Working Conditions":"-10\u00b0C - 40\u00b0C; 10% - 90%RH (non - condensing); Altitude 0 - 3000m","Working Power Supply":"24VDC, AC220\u00b110% (50Hz)","Communication":"RS - 485, Ethernet"}}