he Graham Field ultraviolet diagnostic lamps are precision tools used primarily in dermatology to detect various skin conditions like ringworm, erythrasma, and pigmentary disorders. The 2200 Q-12 Lamp is a lightweight, portable unit featuring dual 4W tubes that provide immediate fluorescence. The 2203 Q-22 Lamp offers a more robust housing and an expanded viewing area for professional clinical use. To maintain peak performance, the 2223A Long Wave Tube provides the necessary UV output for diagnostics, while the 2223C White Light Tube can be swapped in for standard visible light inspections.