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Message: <blockquote data-quote="tarson" data-source="post: 15361561" data-attributes="member: 176018">Information being circulated online attempts to explain the colors of squares that appear on tubes of various products. It is claimed that the different colors relate to the chemical content of the product. Today we’ll take a look at this claim.It’s not true. The squares are actually called “eye marks.” Let’s take a closer look at the claim.In reality, these are merely marks used in the printing process. They are referred to as “eye marks” and read by a sensor in the manufacturing process in order to detect and align squeeze tubes.Typically, the color of the square is also a color of something else being printed on that side of the tube. Tubes of Crest toothpaste, for example, often have blue writing and matching blue eye marks on the back of the product.It should be noted that the simplistic – and incorrect – explanation in the hoax above does not explain the difference between “chemical” versus “natural.” The world around us is full of chemicals that occur naturally. Or, to quote the definition of “chemical” on about.com: Everything is chemical.Bottom LineThe squares on tubes have absolutely nothing to do with the chemical makeup of the product inside. It is merely a mark used by sensors in the manufacturing process.If you see someone spreading this hoax, drop a link to this article to set them straight!source: <a href="http://wafflesatnoon.com/2013/03/04/hoax-meaning-of-squares-on-tubes/" target="_blank">here</a></blockquote>

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