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Hi, are there any Canadian suppliers of pipe failure analyses? ------------------------------ Derrick Vandenberg District Manager Guardian Chemicals Inc. Edmonton AB (780) 707-2789 dvandenberg@guardianchem.ca ------------------------------

Cody, So based on your discussion you can use an alkaline non-phosphate cleanout which will actually clean pretty good. That is one with silicate, polymer, surfactant and caustic. You don't have to go to a non-alkaline material.  ------------------------------ ...

Jay, I spoke with the local municipality and they are only concerned with pH, copper, nickel, zinc, and phosphorus. Please see below for the discharge limits.  Copper- 0 ppm Nickel - .7 ppm Zinc - 1 ppm Phosphorus - 0 ppm pH  < 12 Metallurgy - Mild ...