• Designed for 10ml high-form porcelain crucibles
• Dense ceramic construction supports high heat use
• Helps contain materials during heating processes
• Low permeability supports consistent performance
• Pack of 20 supports classroom and lab supply

These porcelain crucible lids are designed for use with compatible high-form crucibles during heating and laboratory procedures. The dense ceramic construction provides durability and resistance to high temperatures, supporting consistent performance in classroom and lab environments. Suitable for chemistry applications, they help contain materials and reduce heat loss during experiments.