Hi sanath101,
Please refer to the following reply: 1. BSEC algorithm already provides CO2 equivalent estimate [ppm] and Breath VOC concentration estimate [ppm] outputs by default and does not require training. You can check if this is the output you need? 2. BSEC algorithm compensates for temperature, humidity, and pressure sensor, and when using a heater profile for heating, it does not affect temperature, humidity, or pressure; 3. We currently do not have gas lab or recommended third parties; 4. If you use the sensor API of BME68x and BSEC algorithm, there is no need for additional calibration for temperature, humidity, and pressure sensor.
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