Glass - Borosilicate Watch Glasses

Duran®Watch Glass -- Z231576
from Sigma-Aldrich

With fused edges. Manufactured from Duran borosilicate glass type 3.3 for maximum chemical and thermal shock resistance. Duran is a registered trademark of Schott AG. [See More]

  • Glass Material: Borosilicate
  • Diameter: 40
Pyrex®Ribbed Watch Glass -- CLS999075
from Sigma-Aldrich

Molded-in ribs allow vapors to escape during boiling to eliminate pressure buildup. Meets EPA requirements for methods 3005, 3010, 3020. [See More]

  • Glass Material: Borosilicate; Pyrex®
  • Diameter: 75
Pyrex®Watch Glass -- CLS998565
from Sigma-Aldrich

Heavy-wall, borosilicate glass with fire-polished edge provides durability. May be slightly out-of-round due to O.D. variability. [See More]

  • Glass Material: Borosilicate; Pyrex®
  • Diameter: 65