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> Ushio shl-50AC2 50W mercury burner
Ushio shl-50AC2 50W mercury burner
USHIO SHL-50AC2 50W Mercury Burner
In most fluorescence microscopy applications, the number of photons reaching the eye or other detector, such as a video camera, CCD digital camera system, or photomultiplier, is usually very low. This is because the quantum yield of most fluorochromes is low (quantum yield is the ratio of the number of quanta emitted by the specimen as compared to the number of quanta absorbed). In order to generate enough excitation light intensity to furnish a level of emission capable of detection, powerful light sources are needed, usually arc (burner) lamps similar to the example that is presented in Figure 1. These lamps are filled with high pressure gases and should be handled with caution.
The most common lamps are the mercury burners, ranging in wattage from 50 watts to 200 watts and the xenon burners ranging from 75 watts to 150 watts. The mercury burner lamp in Figure 1 consists of two electrodes sealed under high pressure in a quartz glass envelope which also contains mercury.
