https://www.sylpump.com/product/qd-multistage-submersible-pump/qdx-submersible-pumpstainless-steel.html 1.Medium temperature is not more than +40 DEGC 2.Medium PH value between 6.5～8.5 3.Containing solid impurities in the medium volume ratio of not more than 0.1% 4.Diving depth of up to 100m 5.Only pumping water pump