10.17028/rd.lboro.7688330.v1 Glenda McMahon Glenda McMahon Ken Chatterton Ken Chatterton Self-powered chemical doser Loughborough University 2019 WEDC Water for low-income communities Pumps Handpump Pistons Aspirator Doser International and Development Communication 2019-02-18 19:29:40 Figure https://repository.lboro.ac.uk/articles/figure/Self-powered_chemical_doser/7688330 Self-powered chemical doser