From: f.difilippo@skynet.be   
      
   Does anybody know why a pH drop can happen after the bleaching of a surfactant   
   with H2O2 ?   
   Does the residual H2O2 concentration in the surfactant after bleaching play a   
   role in that pH drop ?   
   The surfactant is buffered with KH2PO4 before bleaching.   
      
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