bids are invited for boqmse total quantity : 1--1 voc / formadehyde real time monitoring meter- tvoc in the range of 0 to 9.99 ppm (mg/m3) with resolution 0.01ppm and basic accuracy +/- 5% fs, formaldehyde with range 0 to 5 ppm, resolution 0.01 ppm with -/+% fs, response time should be less than 2 second, with rechargeable battery with option of direct ac adaptor based operation 2 video particle counter with built in camera with software for generating reports from collected data, photos, videos and all necessary items measure minimum 6 channels of particle sizes plus air temperature and relative humidity,particle size channels in the range of (0.3, 0.5, 1.0,2.5,5 and 10 micrometer ), flow rate of 1 feet cube controlled by some inbuilt pump, count modes in form of cumulative, differential, concentration, with 50% minimum efficiency and for more than 0.45 particle size it should be more than 99%, loss should not be more than 5%, and temperature range of air should be -25 to 60 degree celcius, rh range 0 to 100% rh, and dew point/wet bulb 0to 50degree celcius and entire system should be handy for site visit; accessories :- adopter , plugs, cables, stand/tripod, battery, protective case etc. 3 indoor air quality data logger to measure co2 non despersive infrared co2 sensor, co2 measurement range 0 to 6000ppm with resolution 1ppm or better, temperature measurement range -20 to 60 degree celcius with reolution 0.1 degree celcius, humidity measurement range 10 to 95 % with 1% resolution or better, and data logging should be more than 20k sets or better insturment should be handy, accessories;- battery, comptatible sofware, interface cables etc