Graham Field Q Series Uv Magnifier Hand Held Woods Exam Lamps Configuration:Q Series UV Magnifier Lamp: Two 4 Watt Integrally Filtered UV A Tubes and Two 4 Watt White Light Tubes, 650 Typical Peak Intensity 7 °F (38 ± 1 Brand_Alcor Scientific Inc 7 °F (38 ± 1 the LSP selector valves have five clearly marked flow rate settings Long Wave (UVA) with Pedestal Stand• Tube: two 4 Watt Integrally Filtered Tubes• Typical Peak UV Intensity at 6”: 650 μW cm2• Dimensions: 7” (L) x 5¾” (W) x 2¼” (H) Item 2203 Long Wave (UVA) with White Light• Tube: two 4 Watt Integrally Filtered UV A tubes and two 4 Watt white light tubes• Typical Peak UV Intensity at 6”: 650 μW cm2• Dimensions: 7” (L) x 5¾” (W) x 2¼” (H)