Glassware

Type I Class A borosilicate 3.3 glassware conforming to ISO 3585 and ASTM E438 — beakers, Erlenmeyer and volumetric flasks, graduated cylinders, amber reagent bottles, condensers, desiccators and filtration assemblies. Uniform wall thickness and a low coefficient of expansion allow direct heating and rapid cooling without crazing. Autoclavable at 121 °C; hand wash or use a laboratory-grade detergent and avoid abrasive scouring, which creates nucleation sites and shortens service life.

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