1998
Corning, then World Kitchen
Pyrex glass
- Before
- Pyrex bakeware made of borosilicate, the glass used for lab beakers.
- The fix
- Corning sold its housewares arm in 1998. From then on, US Pyrex was all tempered soda-lime glass, phased in since the 1950s.
- Then
- Borosilicate takes about three times the thermal shock. Consumer Reports confirmed the gap in 2011, in tests it admitted went against the instructions. Pyrex sold in Europe stayed borosilicate.
Kept it.
Still soda-lime in the US.
Your call
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