sodium hydrosulphidepackaginglined with plastic bags,with outer surface ofplastic sheetingwovenbagweightof25 kg. sodium hydrosulphideisstoredin a cool,dry placeto preventthesun and rain. Solidproductwithwater at room temperature1:2.5-1:3[weight ratio]mixedstirredforabout30 minutes.Drugscompletelydissolved,add30-40 timesdiluted with waterordilutedinto a liquidaccordingtothe desired concentrationusing the[thegreaterthesource water turbidity,thesecondarydilutionadd watermore.Source waterturbidityinthe100-500mg /L,the dosage of5-10mgperone thousand tonsofwaterdosageis 5-10kg.Small scalewater qualitycharacteristics ofthe best pre-select the bestvalue, and thenvotewith.