Aquabest UV Sleeve - Quartz sleeve for installation into systems for ultraviolet purification of water. These sleeves encase the UV lamp so as to protect it from direct contact with water and ensure superior UV light transmission in effectively killing microorganisms. High-quality quartz AquaBest UV sleeves guarantee maximum UV intensity and long-lasting lives of lamps. They are easily cleaned and replaced, thus playing a very important role in the effectiveness and safety of UV-ray water treatment.