The J47 was designed to meet the unique needs of a food and beverage testing where the samples are mostly a mixture of sugar and water and the refractometer is viewed more as a tool than a laboratory instrument. The J47’s single flat measurement surface, temperature correction and one button measurement capability make it perfect for heavy use applications.The Rudolph J47 features a fully automatic measuring system. The operator simply places the sample on the prism, presses a button and the result is displayed on a color touch screen. There are no shadow lines to match and there is no eyepiece requiring operator determination or manual adjustment.