UNTREATED                                           Geoshield^TM is the turquoise inner lining of the WASTEFLOW tube which contains the anti–microbial Tributyl Tin Maleate.
Geoshield is an anti-microbial. It does not treat the water flowing through the tube.
It has been found to be effective in preventing a slime build–up inside the tube, even with effluent that has very high BOD > 900 mg/l.
Geoshield works on the energy systems of the microbial cell. Geoshield will work as long as the polymeric matrix remains intact because the antimicrobial agent is inherent within the polymeric structure.
There is virtually no discharge of Geoshield into the environment because the active ingredient, TBT–maleate, does not migrate readily through polymeric matrices. One of the major advantages of TBT–maleate over Tributyl Tin Oxide (TBTO) is that TBT–maleate is a solid; whereas, TBTO is a liquid. Therefore the TBT–maleate is a different chemistry with low migratory properties and very low water solubility If there were a discharge of Geoshield to the environment, the active TBT–maleate would adhere readily to any particulate matter suspended in the water, and would then fall to the bottom of the watercourse as a sediment. Studies have shown that half–life of the tri–organotin moiety in surface waters is 3 –10 days (Ref. Tributyltin in Sediments pg. #9 – Caldwell et. al. Parametrix Inc., Washington USA). The half–life in sediments is longer (up to several months) but is then not readily "bioavailable." Geoshield is only available in the WASTEFLOW product range.

        TREATED