Narrow neck borosilicate glass Erlenmeyer flasks with beaded rims and white graduations.

• Made of high quality, heavy duty, borosilicate 3.3 glass for excellent durability and chemical resistance
• Narrow neck and conical shape prevents spills
• Chip and crack resistant, fire polished beaded rims
• Easy-to-read white enamel graduations and specifications for contrast against dark liquids

Narrow neck Erlenmeyer flasks are made of high quality borosilicate 3.3 glass. Autoclavable, with superior chemical durability. Low temperature gradient - can withstand high temperatures and thermal shocks.

Eisco Labs borosilicate glass has the following heat tolerances:
- Strain point 515 °C
- Annealing point 565 °C
- Softening point 820 °C