Inquiry (采购产品): cistern level Saw your PT 500 in Design News. Will it tell me the level of my lab drain cistern? There is sludge on the bottom most of the time. What does it cost? **** Hidden Message ***** Pat Ginty 60501 Company: IIT-NCFST E-mail: ginty@iit.edu **** Hidden Message ***** ginty@iit.edu