The antibiotic zone provides a rapid accurate method for determining the strength of antibiotic materials by measuring the diameter of an inhibited zone in Petri- dish In use, the discs are placed on Petri-dish prepared with agar and inoculated with bacteria. After incubation, the bacterial cover the entire dish except for a circular in – habited zone around being a function of the strength of the antibiotic. This zone reader measures the diameter of the inhibited zone to 0.02 mm within range of 0 to 35 mm diameter. Light from a source in the base, passes through the transparent and semitransparent portion of the agar, then to a reflecting mirror supported by an arm above the unit. The mirror reflects the light to glass prism mounted at the front of the unit and magnified image of the zone of inhibition is clearly visible on the prism. Specifications : Power : 220V + 10% 50 Hz. Size : 35 cm X 30 cm x 20 cm Weight : Net 10 Kgs
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