Walex Dura-Blue tank dye
Walex’s Dura-Blue is an enhanced nonstaining color dye that will last longer in overused holding tanks where pH shifts are common. It withstands heavy use and high temperatures. All Walex liquids and Paks now use Dura-Blue. Dura-Blue does not negatively impact wastewater treatment plants. www.walex.com; 800-338-3155
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