I have a box (4-1 gal. bottles) of PoolBrand Algaecide 40 that I bought at Sam's Club last year and never used. It is:
Alkyl (50%C/14, 40%C/12,10%C/16) dimethyl benzyl ammonium chloride...40%
Other Ingredients:....60%
Total:...................100%
Is this a linear, or poly quat, or a quat at...