Burning position of lamp: horizontal +- 10 degrees. Applications: contact copying of images from transparent film to UV sensitive carrier. HPM - 13 lamp is made by Philips, Holland. The lamp temperature should not exceed the value given by the manufacturer during its operation. Adequate forced air-cooling is necessary for proper performance of these lamps. Insufficient excess cooling may cause premature failure explosion of these lamps. HPM Ultraviolet radiation emitted by these lamps are harmful for eyes, proper care should be taken while the lamp is in operation