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Welcome to Marquest Scientific. Manufactured and Assembled in Costa Mesa, CA U.S.A.
For over 35 years, Marquest Scientific has speciallized in the Design, Development, and Manufacturing of Corrosion Resistant & High Purity Fluid Handling Products.
PVC, CPVC, Polypropylene, & High Purity PVDF

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  Family owned and operated since 1978, Marquest Scientific’s roots in ThermoPlastic injection molding of corrosion resistant and high purity plastics began in the late 1950s, when our founder brought over the first reciprocating screw type injection molding machine to the USA from Ankerwerk, a company based out of Nurnberg, Germany. It was this machine that solved the problem of molding highly rigid PVC industrial parts and gave our founder the confidence to mold the industrys first all plastic ball valve in 1964. This spirit of innovation and expertise is what drives our company today and is why you can expect Marquest Scientific products to be delivered to you at the highest quality and best value in the industry.  
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