Chemical Powder Appearances
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This document lists the appearances of various chemical powders and solids. It describes 18 different chemicals including metals like zinc, lead, cadmium, iron, copper and aluminum as well as their oxides. For each chemical, it provides the chemical name and describes its visual appearance such as color and physical state as either a powder, crystal or solid metal.
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List of ceramic proppant testing laboratories
This document lists 20 ceramic proppant testing laboratories from around the world, including their names, countries, and contact information. The laboratories are located in the USA, Australia, UK, Netherlands, China, Mexico, Venezuela, Bolivia and Argentina. They provide testing services to evaluate ceramic proppants used in oil and gas extraction.
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