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• X amplifier: 1MΩ d
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A general purpose scaler-timer suitable for radioactivity counting utilising Geiger-Muller tubes
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Digital Colorimeter S-Range 240V Age 5-6 • X amplifier: 1MΩ dRobust colorimeter featuring a stabilised power supply that maintains a constant light output from a 6V, 0. 15A tungsten lamp with infra red filter. There are two absorbance ranges and one transmission range. An automatic gain control provides automatic zeroing by simply pressing a switch and the instrument is insensitive to normal ambient lighting. The eight colour filters are held in a rotatable filter holder. The single cuvette holder takes 10mm
