KIMAX® narrow mouth 250mL Erlenmeyer flasks for economy and versatility. These flasks are the choice for general laboratory usage. Tops are reinforced and tooled with a rounded finish, containing more glass to give them maximum mechanical strength. Body is thick walled with a long tapered outside contour to minimize chipping when struck or rubbed together. These Erlenmeyer flasks also have a durable white ceramic enamel scales to indicate approximate volumes at various levels, useful in measuring and mixing solutions where a high degree of accuracy is not necessary. Designed to meet ASTM Specification E1404, Type I, Class 1 requirements. 12/Pack; 4 Packs/Case. Kimble® #: 26500-250.