The Maxima ML-3500 Series ultraviolet lamps use advanced micro discharge light (MDL) technology plus a filter and bulb/reflector to deliver up to 10X the UV-A output of conventional HID inspection lamps. With these lamps, NDT inspectors can see small surface defects, hydrocarbon contamination and other flaws. All bulbs have a rated life of 2,000 hours. Instant on/off/restrike eliminates lamp warm-up and reduces inspection time. The lamps produce virtually zero emission of hazardous UV-B and emit minimum visible light. The series is available in 120-, 230-, 240- and 100-volt AC versions, as well as in battery-operated versions that include a 12-volt, 7-amp per hour rechargeable battery that will operate the lamp for two full hours. A battery charger and carrying case are included.