According to the the World health Organization guidelines ther, should not be any coliform and enteric pathogenic bacteria in drinking water as they are indicators of fecal contamination that could cause to digestive system such as diarrthoes.
The detection of certian types of coliform bacteria in drinking water, such as Citrobacter andsine harmful bacteria like Salmonella and Proteus which are all hydrogen sulfide producting bacteria which cause diarthoes can done by field test kit VOH12.
Storage in temperature 12 month
Contain: 50 test/kit
Standard range by WHO reccommended