still, seven indicators the accuracy of their determination is evidenced by an expert, tatyana farafonovawater for drinking, and not a little, what they say is a percentage, but salinity is not interesting. well, we are not on the black sea. unfortunately, density is the specific gravity of water. why should i be? we need a unit that has been all our lives, if it's super dirty, it's probably even harder, and lead generally goes on one. i think, now, if we had alcohol, here, there would be a density, yes, we looked at the density of vodka. here it is yes, but for water the density of water. it somehow, i don't know why. and here's the confirmation in practice we analyzed the water from the family's house in the laboratory. shevchuk, a chinese tester , showed that the salt content in general is high in it, but he did not see an excess of fluorides by one and a half times, you can’t drink such water. this is already the basis for the occurrence of dental fluorosis in children, first of all, that is, if the child constantly consumes such water, then the enamel thickens. just disfigurement of