Kimax Heavy Duty Class A 3.3. Boro. Conical Flask 250Ml

Kimax Heavy Duty Class A 3.3. Boro. Conical Flask 250ml. KIMAX® Heavy Duty Class-A 3.3. Borosilicate glass flasks offer the same quality as Pyrex. 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. Designed from ASTM Specification E1404, Type I, Class I requirements. Manufactured from 33 expansion, low extractable Borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements. Suitable Rubber Stoppers: 2742- Solid 27mm, 2743 - 1 Hole 27mm, 2744 - 2 Hole 27mm