This porcelain lid is designed for use with crucible No. 3 during calcination, ashing, and thermal treatment of samples. It protects the sample from contamination and contributes to uniform heating during high-temperature processes. Manufactured from chemically and thermally resistant laboratory porcelain, the lid withstands rapid temperature changes. Size: 38 × 18 mm. In stock at the Texnohim Plus warehouse in Tashkent. Suitable for analytical and educational laboratories.