Tapón sin agujero, rosca 20-400 para vial para almacenar muestras. NATIONAL SCIENTIFIC. Material: Negro fenólico con junta PTFE

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Storage glassware manufactured in Type 1, Class A, 33 expansion borosilicate glass or 51A amber glass. Capacity ranges from 2ml to 40ml. Chemically inert caps. Top grade PTFE septa used for cleanliness.

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Technical documentation

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