The 400 mL Pyrex Griffin Beaker 1000-400 Lab Grade is a high-quality lab-grade beaker made of borosilicate glass, known for its durability and resistance to heat. With a capacity of 400 mL, this beaker is perfect for precise measurements and mixing of various liquids in a lab setting. The PYREX brand ensures reliability and quality, making it a must-have for any chemistry or biology lab. Available with bulk discounts, this beaker is a great value for those needing multiple items for their research or educational purposes.