Optimize offers a broad selection of lamps for OEM HPLC detectors. The high quality standard lamps come with a guaranteed 1,000 hour lifetime. We also offer our DX2 DoubleLife» Lamps. These long-life lamps are made using only top quality components and come with a 2,000 hour lifetime guarantee. This item is designed to work with Varian Prostar 340, 345, U-VC, UVDII, and UV-M pump models.