A+ offers a wide array of filtration solutions to fit most any need in the Natural Gas, Petrochemical and Refinery industries. Whether it be particulate or coalescing filters for gas samples or self-cleaning particulate filtration for liquid lines, we can help solve most any issue. Our filters have very low internal volume and no dead space, providing more accurate and efficient sample handling. Along with our Analytically Correct™ design philosophy, practical engineering of each unit makes each one of our products user-friendly and easy to maintain.