United Salt Corporation (USC) 4800 San Felipe , Houston , Texas 77056 USA About Solutions products Companies United Salt Corporation (USC) Products USC Tru-Soft - Solar Brine Block USC Tru-Soft - Solar Brine Block From Agriculture Products 0 Share Tru-Soft Solar Brine Blocks are produced for the requirements of many water softener units. The solar crystals are harvested, kiln dried and compressed into 50 Lb. blocks. Most popular related searches agriculture production agriculture product agriculture water-use agriculture produce agricultural water agriculture water Details: Details: Category: Water Softening Product Type: SOLAR Package Sizes: 50 lb. Block, wrapped in clear film Customer reviews No reviews were found for USC Tru-Soft - Solar Brine Block. Be the first to review! Add your review Publish your review Great! review successfully added!