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Max Levy (1857-1926) was an American inventor and scientist recognized for invention of precision machinery for the making of half-tone screens which were used in the production of relief printing plates by newspapers and magazines. He also invented a counting chamber for a haemocytometer for which he received the Edward Longstreth medal from ...
The Levy Dark-Line Hemacytometer has an etched field with an opaque counting field. It is of one piece construction, ensuring long term durability and accuracy. An H-shaped moat forms two counting areas, or plateaus.
The Petroff-Hausser Counter is one piece construction ensuring durability and accuracy, featuring an Improved Neubauer ruling on a single plateau. The Petroff-Hausser Counting Chamber is popular for bacteria and sperm counting and offered in a series of cell-depths (10, 20, 40, microns).
Inside the case are two Trenner diluting pipettes, a closure (clamp), instruction manual (copyright 1927), and counting chamber with an inscription reading “LEVY-HAUSSER / COUNTING CHAMBER / U.S. PATENT JAN 8, 1924.”
This tool was originally invented by Louis-Charles Malassez, a 19th-century French anatomist and histologist. The item shown was manufactured in the American city of Philadelphia in 1940 by Arthur Thomas & Company, according to a design patented by Dr Max Levy in 1917.
The hemocytometer (or haemocytometer) is a counting-chamber device originally designed and usually used for counting blood cells. [1] The hemocytometer was invented by Louis-Charles Malassez and consists of a thick glass microscope slide with a rectangular indentation that creates a precision volume chamber.
Product Details. Hemacytometer for accurate red and white blood cell counts. Improved double Neubauer rulings with dark lines on a clear background. Cell depth: 0.1mm. One-piece construction. Ordering information: Counting chamber furnished with two octagonal cover glasses. Without case. Product Details. Customers Who Bought This Also Bought.
