THREE S INSTRUMENTS PVT LTD is engaged in businesses of international quality products based on complete knowledge & assured after sales - services with back up of # GfG Germany _ for complete range of portable & fixed gas monitors # Lumasense Technologies - for their gas division - INNOVA & ANDROS Brand- Multi gas monitors based Photo Accoustic Spectroscopy PAS with Special applications including exhaust, Fermentation, green house, tracer gases monitoring etc etc # ION Science UK for GasCheck and fixed VOC range of gas detector # TSI USA for their Industrial Hygiene, Respirators fit testers and Environmental products i.e PORTA COUNT, DUSTTRAK aerosol monitors, Q trak, SIDE PAK , Environmental aerosol monitors, VOC monitors in PPB range etc # Wahl USA for portable Temperature measuring instruments # E Instruments USA for their various Exhaust gas or emission analysers activity is intended for complete INDIA. With complete technical know how & team experts we provide free warranty period services. Thereafter we undertakes annual maintenance and/or calibration contracts .