“RETAIL BLACK SHOCK/ TRI-CHL – 4LBS” has been added to your basket. View basket Previous Product Next Product PHENOL RED 1/2oz $697.08 100 in stock PHENOL RED 1/2oz quantity Add to basket SKU: PEPR161018 Category: CHEMICALS Tag: CHEM Related products Quick View Quick View CHEMICALSALGICIDE LO-CHLOR-ALGAECIDE 1 GAL $11,862.50 Add to basket CHEMICALSOTO 1/2oz $697.08 Add to basket Quick View Quick View CHEMICALSSODA ASH $2,564.50 Add to basket