PYREX® Vista™ Griffin Beakers with spout are made of sturdy borosilicate glass and provide both mechanical strength and thermal shock resistance. For convenience, the 250ml through 1,000ml beakers have a double graduated metric scale to indicate approximate content. All sizes have an extra large marking spot. The 10ml size is not graduated. These economical PYREX® Griffin beakers are designed to ASTM E-960, — type I, low form with spout.