High performance 25-watt UV tubes for high fluorescence and sensitivity on stained gels. Stainless steel cover frame provides for easy cleaning and reduces contamination of samples. Uniform, brilliant back-lit fluorescence illumination is enhanced with UVP's unique background uniformity screen and UVG long-life filter. Uniformity screen is available on units with midrange or longwave UV. The transilluminator's powerful cooling fan maintains a low filter surface temperature to avoid sample damage and maintains a constant UV intensity.