LabStrong Corporation manufactures two replacement water purification cartridges for Thermo Scientific Barnstead (TSB) Mega-Pure deionizer accessories. High-purity cartridges (part number D400377LS, directly comparable to TSB part number D400377), composed of mixed-bed ion exchange resin, are designed to produce high-purity deionized water. High-capacity cartridges (part number D400499LS, directly comparable to TSB part number D400499), composed of two-bed ion exchange resin, are designed to produce quality deionized water at an extended life. Each cartridge is designed with a large cartridge capacity, which allows for extended cartridge use. In addition, they are typically stocked. Same-day shipping is available for all in-stock products. http://www.labstrong.com
