So is Polyquat a name brand? I have to go to the pool store to pick up a check from them, and I want to go ahead and get the right stuff for closing this fall.
nope, it's really an ingredient. You want "Poly [oxyethylene (dimethyliminio) ethylene (dimethyliminio) ethylene dichloride" at 60% concentration.

This list is a little old, so may have changed:
 
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