Vayubodhan Upkaran Pvt. Ltd. Manufactures Local Air Quality Sampler. Vayubodhan Upkaran Pvt. Ltd. Offers air pollution monitoring instruments. Local Air Quality Sampler is the instrument for workshop and indoor monitoring. Local Air Quality Sampler is a simple and handy system for monitoring fugitive emissions. It is designed to monitor air -quality on the shop floor and in the surrounding environment. The sampler allows monitoring of the concentration of toxicants present in vent gases or emissions from fume hoods, ducts or fugitive emissions from glands. It is available in model no. Of APM 414. These performance capabilities make the APM 414 an ideal choice for chemical units handling hazardous chemicals, pesticides, dyestuffs etc. As well as small and medium sized metallurgical units.