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American Optical Darkfield Quebec Colony Counter 3325**This unit has been tested specifications and buyer can expect a working unit with 30 day warrantySee photos for further details.(Please be advised that any warranty/guarantee/return policy provided from the seller is between the buyer and the seller only. Bid on Equipment is not and cannot be held responsible in any way. Please reference our Terms and Conditions for further information.)Exclusive darkfield design provides even, glare-free illumination. Contrasted against darkfield background, colonies are bright readily distinguished from other structures in agar. Each probing action into the colony completes a circuit and is automatically recorded.Key Features:Highly polished, annular reflector spreads light from 40-watt bulb uniformly over entire culture plateOperating switch conveniently mounted on front of instrument caseHinged door provides easy access to change light bulbjust remove two screwsContainer holder adapts for centering round dishes up to 100mm diameter or square culture plates up to 100 100mmAdjustable focusing rod allows 1.5X lens to be raised or lowered for magnified viewingLens rotates 360 for ready access to culture platesReset bar provides immediate zeroing of five-digit counterManufacture SpecificationsCertifications/Compliance ULFor Use With (Application) Count bacterial colonies quickly and accuratelyProduct Type Darkfield Colony CounterAdditional Prep Fees May Apply