Gas Purifiers and Filters PurityPlus® offers complete lines of gas purifiers and filters in a variety of sizes to minimize contamination and enhance purity levels of our specialty gas products. Whether you're searching for a hydrogen purifier, nitrogen purifier, oxygen purifier or any other specialty gas purifier, PurityPlus will have the exact product you need. We also have several compressed gas filters to meet the needs of those looking for a nitrogen filter, hydrogen filter, or any other industrial gas filter. Our various gas purifiers and filters are capable of eliminating virtually all contaminants and can be applied with a variety of gas types and products, including the safe removal of oxygen from hydrogen by catalytic action. No matter the application or gas products you are using, PurityPlus® has the purifiers and filters you need to remove contaminants and ensure the purity of your gases. To read more about our large selection of purifiers and filters, browse our purifiers and filters catalog pages, locate your nearest PurityPlus® provider, or call to speak with a specialist at 877-81P-PLUS (877-817-7587).