Thanh Dam Nguyen, My Linh Hoang, Hong Anh Duong, Hung Viet Pham, Anh Tuan Do and Jean-Luc Vasel 2020. Development of a device based on the respirometric principle for long-term monitoring of BOD and pH: a novel approach in wastewater characterisation. Vietnam Journal of Science, Technology and Engineering. 62, 3 (Sep. 2020), 10-14. DOI:https://doi.org/10.31276/VJSTE.62(3).10-14.