The Q-Series combines a powerful UV lamp with a high-resolution magnifier lens that measures 2" x 4" with the power of 3X that has a focal length of 8 inches.Q-22 has two longwave 4-watt integrally filtered lonewave tubes, and two white light tubes. Typical peak intensity at 6 inches is 650 uW/cm2. The two sets of lights can be operated independently. Q-22B has four longwave 4-watt integrally filtered longwave tubes. Typical peak intensity at 6 inches is 1200 uW/cm2. Q-22NF has two longwave 4-watt integrally filtered tubes, and two shortwave 4-watt tubes with a long life filter assembly. Typical peak intensity at 6 inches is 650/700 uW/cm2.