PYREX 4000mL Erlenmeyer Flask with 40-35 Standard Taper Joint Without Tubulation – 33985-4L

The PYREX 4000mL Erlenmeyer Flask with 40/35 Standard Taper Joint Without Tubulation (33985-4L) is a premium laboratory glass flask designed for large-volume liquid collection, sample preparation and use with compatible laboratory microfiltration assemblies. Manufactured by Corning under the PYREX brand, this 4L Erlenmeyer flask features durable borosilicate glass construction, a precision-ground 40/35 standard taper joint and a flat-bottom conical design. The flask is manufactured with uniform wall thickness to provide a balance between mechanical strength and thermal shock resistance. Its graduated markings allow approximate liquid volume measurements, while the extra-large marking area provides space for sample identification and laboratory labeling. Designed without tubulation or a sidearm, the flask is suitable as a replacement collection vessel in compatible PYREX microfiltration assemblies, including the PYREX 33980-1L filtration system. Its 4000mL capacity makes it suitable for pharmaceutical laboratories, analytical chemistry facilities, research institutions, universities, environmental testing laboratories and industrial quality control applications. Key Features - 4000mL Capacity: Designed for collecting and handling large volumes of laboratory liquids. - 40/35 Standard Taper Joint: Precision-ground joint allows connection to compatible laboratory glassware. - Without Tubulation: Sidearm-free design suitable for compatible filtration assemblies. - PYREX Borosilicate Glass: Provides chemical resistance and durability for laboratory applications. - Uniform Wall Thickness: Balances mechanical strength and thermal shock resistance. - Graduated Markings: Provides approximate measurement of liquid volumes. - Extra-Large Marking Area: Allows convenient sample labeling and identification. - Flat-Bottom Erlenmeyer Design: Offers a stable base for laboratory handling. - Compatible Filtration System: Suitable as a replacement flask for PYREX 33980-1L. - Reusable Construction: Designed for repeated laboratory use with appropriate cleaning and handling Specification Details Manufacturer Corning Brand PYREX Product Code 33985-4L Product Name Erlenmeyer Flask with Standard Taper Joint Capacity 4000mL (4L) Material Borosilicate Glass Code 7740 Flask Shape Conical (Erlenmeyer) Base Type Flat Bottom Joint Type Standard Taper Inner Joint Joint Size 40/35 Tubulation Without Tubulation Graduation Yes Graduation Range 1500–3500mL Graduation Interval 500mL Labeling Area Extra-Large Marking Space Approximate Height 356mm Approximate Outer Diameter 198mm Reference Standard ASTM E-123 Compatible Assembly PYREX 33980-1L Quantity per Pack 1 Piece Quantity per Case 1 Piece