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with 9 flats separated by walls and doorways
Ideal for small group experiments in electrostatics
educational set encouraging creative and
they can be placed on top of each other and thus closed to protect the contents from animals
Alpha particles ionize the air
Digital Colorimeter S-Range 240V (NBO) with 9 flats separated byRobust 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