• Complies to EN ISO 4142
  • Made from ASTM E-438 Type-1 Class A, Boro 3.3 glass
  • Without Rim
  • Uniform wall Thickness
  • Excellent heat transfer

iso 4142 Boro 3.3 or Borosilicate 3.3 is a type of glass having very low coefficient of thermal expansion White Printing Chemical Resistant