PYREX 250mL Narrow Mouth Erlenmeyer Flask with Phenolic Screw Cap

The PYREX 250mL Narrow Mouth Erlenmeyer Flask with Phenolic Screw Cap is a high-quality borosilicate glass laboratory flask designed for microbial culturing, liquid mixing, media preparation and laboratory solution storage. It features a durable black phenolic screw cap with an inert white rubber liner that offers a secure closure and resistance to steam sterilization. Manufactured from premium PYREX borosilicate glass, the flask provides excellent chemical resistance, thermal stability and durability. Its narrow-mouth design, flat bottom, graduated markings and convenient marking area make it suitable for microbiology laboratories, pharmaceutical laboratories, research institutions and educational facilities. Key Features - 250mL Capacity: Suitable for microbial culturing, laboratory mixing and media preparation. - Phenolic Screw Cap: Durable black impact-resistant cap for secure closure. - Inert Rubber Liner: Cemented-in white rubber liner resistant to steam sterilization. - 38-430M Thread Finish: Provides compatibility with appropriately threaded replacement caps. - Narrow Mouth Design: Helps minimise splashing and supports convenient handling. - Borosilicate Glass Construction: Offers excellent chemical resistance and thermal stability. - Graduated Markings: Approximate volume graduations from 50mL to 200mL. - 25mL Graduation Interval: Supports convenient approximate volume measurement. - Flat Bottom Design: Provides stability during laboratory handling and mixing. - Marking Area: Allows convenient sample identification and labelling. - Reusable Construction: Suitable for repeated laboratory applications. - Versatile Applications: Ideal for microbial culturing, solution preparation, shaking and laboratory storage. Specification Details Brand PYREX Manufacturer Corning Incorporated Product Code 4985-250 Product Type Narrow Mouth Erlenmeyer Flask with Screw Cap Capacity 250mL Material Borosilicate Glass Flask Shape Conical (Erlenmeyer) Bottom Design Flat Bottom Neck Style Narrow Mouth Top Style Threaded Cap Type Screw Cap Cap Material Phenolic Cap Colour Black Cap Liner Inert White Rubber Thread Finish 38-430M GPI Graduation Range 50–200mL Graduation Interval 25mL Graduation Type Approximate Graduation Colour White Enamel Approximate Height 135mm Approximate Outer Diameter 81mm Glass Colour Clear Marking Area Provided Cap Included Yes Replacement Cap Corning No. 9999 (matching thread) Sterility Non-Sterile Reusable Yes Quantity per Pack 6 Pieces Quantity per Case 24 Pieces Applications Microbial Culturing, Liquid Mixing, Media Preparation and Laboratory Storage