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The Boekel 201100 Mini Orbitron Variable Speed Nutator is a benchtop digital shaker that rotates at speeds between 4 and 24rpm, and has a fixed tilt, an LED, a platform, and a black, rubber dimpled mat. The 20 degree fixed angle ensures even mixing. Continuous operation, and up and down speed controls provide ease of use. A two-digit LED clearly shows the current speed. The tray platform accommodates a variety of blood and centrifuge tubes up to 0.8kg/1.8lb. load capacity. The low profile and small footprint minimizes bench space. The unit comes with a black rubber, dimpled mat that can be cleaned with soap and water and is autoclaveable. Applications for this shaker include life science laboratories, blood banks, liquid extractions, dissolving samples, and room temperature blots. Specifications Speed 4 to 24rpm Tilt angle 20 degrees fixed Capacity 0.8kg/1.8lb. Operating temperature 4 to 40˚C Electrical Requirements 12V DC, 1.25A via 100-240AC adapter Platform dimensions 24.3 x 13.1cm/9.75 x 5.25 inches (W x D) Shaker dimensions 13.7 x 18.7 x 12.5cm/5.5 x 7.5 x 5 inches (H x W x D) Weight 1kg/2.21lb. H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back. Laboratory shakers agitate liquids during laboratory procedures. These devices can be analog or digital and are typically an automated, electrically powered, countertop unit that shakes liquid in lab containers, such as flasks, funnels, or test tubes. Some shakers can operate inside fume hoods, incubators, refrigerators, or other laboratory devices, and can include controls for the frequency and/or degree of movement. The types of shakers include: orbital, rocking, rolling, rotating, and wrist action. The most common orbital shaker provides a smooth, continuous, circular motion, sometimes with a tilt angle, for uniform mixing of contents. The rocking shaker creates gentle uniform mixing with a see-saw, or up and down, motion. Reciprocating, or rolling, shakers provide a horizontal side-to-side motion with simple agitation of samples. A rotating, or rotisserie, shaker provides samples with a rotating action that moves in a circular motion. Wrist-action shakers duplicate the effect of hand mixing with "arms" on each side of the unit. Some shakers have the ability to incubate or refrigerate samples while providing shaking action. Boekel Scientific manufactures laboratory equipment such as incubators, shakers, rotators, and water baths. The company, founded in 1868 and headquartered in Feasterville, PA, meets International Organization for Standardization (ISO) standards 9001:2008 and 13485:2003.