Natural Salt Solutions 1: Ion Exchange Overview Getting Started Techniques Procedure FAQ Full Lab Manual Introduction & Goals Chemistry & Background Key Questions Prelab Problems Safety Procedure In Your Write-up Experiments Index ChemLab Home		Testing Effluent pH Use a glass rod to pick up a drop of effluent from your column. Catch a drop as it elutes, rather than taking one from the flask. Put a piece of pH paper on a clean watch glass. Put the drop of effluent on the pH paper. Compare the color of the paper to the scale on the package, to determine the pH. To avoid contamination of your effluent, always take the solution to the paper, rather than the paper to the solution.
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