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Learn about the available certified reference materials

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Proficiency Testing

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Purificação de águaWelcome to the website of the Metrology Reference Laboratory of the Technological Research Institute of the State of São Paulo, a space of communication with colleagues, clients and partners. We hope to be able to offer more and more complete content for our visitors.  Important: Some content on this site can only be accessed by registered users, so log in to your account. If you do not have an account, create one using login form.