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Corning^® PYREX^® Glassware

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	Figure 1. Corning's first PYREX® catalog in 1915 only had flasks and beakers.

Of the hundreds of commercial glasses produced, PYREX low expansion borosilicate Type I glasses comes closest to being the ideal glass for most laboratory applications.

With proper care, they will withstand nearly all temperatures used in normal laboratory use. They are highly resistant to chemical attack. Their low coefficient of expansion allows them to be manufactured with heavy walls, giving them mechanical strength, while retaining good heat resistance.

Corning offers three Borosilicate Type 1 glasses in their PYREX Brand glassware:

• Code 7740 glass, the original PYREX ^® glass used for most chemistry glassware. This was the glass used to construct the mirror for the 200 inch Hale telescope on Mount Palomar
• Actinic red Code 7740 glass, contains a red ultraviolet shielding stain fired on to the exterior surface 
• Code 7800 glass,  with a slightly higher expansion rate than the previous glasses, is used primarily for pipets

Check our Glassware Document Library for the characteristics and properties of these PYREX glasses.

Store More with PYREX® Storage Bottles! Check out the new Corning Bottle Selection and Use Guide.		Save money! Corning offers PYREX® Assortment Packs for Erlenmeyer Flasks, Cylinders and Beakers.		Every new PYREX® VERIFIED Volumetric Flasks are guaranteed to meet Class A volumetric tolerance.

Click here to learn more about PYREX^® products in our Labware and Equipment Product Catalog