community and domestic arsenic filters

KASHINATHPUR FREE PRIMARY SCHOOL, RAJARHAT, KOLKATA

RATUA BLOCK II CHOUDUAR PRIMARY SCHOOL, MALDA

COMMUNITY FILTER AT AMBIKA SOUDAMINI GIRLS HIGH SCHOOL, RAJARHAT, KOLKATA

40 DOMESTIC FILTERS IN BARASAT, BAMANGACHHI AND BARUIPUR, KOLKATA

Community scale filter (2000 l/h) at Kashimpur Balika Bidyalaya, Duttapukur, Kolkata, India by Mondal Precision Pvt. Ltd. and IIT Kharagpur