Guide to Safely Using Heatresistant Glassware

Have you ever wondered why glassware labeled as "heat-resistant" sometimes cracks unexpectedly? The answer likely lies in a common misunderstanding of what "thermal shock resistance" truly means. Today, we examine this critical concept using HARIO heat-resistant glass as an example to help you safely use your glass products.

Many consumers mistakenly believe that a "120°C thermal shock resistance" rating means the glass can withstand temperatures up to 120°C. In reality, this specification refers to the maximum temperature difference the glass can endure during rapid changes. For instance, HARIO's heat-resistant glass can withstand temperature variations of 120°C or less without breaking.