Aeroqual’s portable air quality monitors are very useful for indoor air quality monitoring with high accuracy and reliability.

https://www.aeroqual.com/indoor-air-quality-monitors/portable-monitors

Arideep Mukherjee Thanks..

www.sisailmatutkimuspalvelut.fi look that. In Finland Ihave used this method in working places and homes. Method collects water (moisture in the air ) with co2 ice collector and that water with toxins in it is then measured with human macrofhages. It will show how many % of the macrophages die in that mixture. It doesn,t tel what is the toxin , but will tell how toxic the air is to human cells , and possibly all eucaryotes, . I work as occupational medicin doctor in finland . Look our study Tamara Tuuminen and Kyösti S. Rinne " Severe sequelae to Mold related Illness in two finnish cohorts" We measured the air in that scool case where the teachers were wery sick.

Dear Deshan, I have published a few works on Air Quality. It sincerely depends on the types of pollutan indoor gases ( Methan, Carbon dioxide, etc) you are researching on. There are CO2 self calibrating Handheld Air Quality Monitoring Equipment, there are Handheld for CO, CH4, etc. The accuracy of these instruments are guaranteed and they have factory calibration settings. GasAlert-Honeywell products, Ambro products, etc. They are onlone, it’s your methodology that will determine data collection pattern. If it’s Peak data or Off-peak data, etc.

Efegbidiki Lympson Okobia I'm hoping to do the indoor measurements in school class rooms the basic parameters including PM2.5 and PM1. GasAlert-Honeywell products, Ambro products are they good ?

Kyösti Sakari Rinne thank you

Dear Deshan, Honeywell, Aerosol, Ambro and RKI products are good but you must ensure that calibration is done as at when due because of accuracy of data you will be collecting.

Efegbidiki Lympson Okobia Thanks a lot Mr.Lympson.

The HD37AB1347, IAQ Monitor is the best so far and comes highly recommended for determination of heating and cooling loads as well as ventilation rates necessary to maintain thermal comfort and appropriate indoor air quality.

Thanks Archie Buthelezi , is it possible to calibrate ? any web link ?