Corning Erlenmeyer Flask Pyrex 500 ml Narrow Mouth - Total of 6 Flasks

Corning PYREX 4980-500 Narrow-Mouth Heavy-Duty Rim Erlenmeyer Flasks (500 mL, Set of 6). Classic conical borosilicate glass laboratory flasks engineered with uniform wall thickness and reinforced heavy-duty tooled tops to provide optimal balance between mechanical impact resistance and thermal shock durability for routine mixing, heating, and culturing.

Used, in good condition.

• MPN / Catalog Model: 4980-500 (PYREX Narrow-Mouth Erlenmeyer Flask Series)
• Manufacturer & Line: Corning Life Sciences / PYREX Reusable Laboratory Glassware
• Volumetric Capacity & Graduations: 500 mL nominal capacity with approximate permanent white enamel graduations spanning 100 mL to 500 mL (in 50 mL increments) and an oversized matte white marking spot for pencil or marker labeling
• Dimensions & Closure Compatibility:
  • Outer Dimensions: Approx. 101 mm outer diameter × 176 mm overall height
  • Stopper Size: Narrow-mouth neck engineered to accept a standard No. 7 rubber stopper (approx. 34 mm neck outer diameter)
• Material Construction: Fabricated from low-expansion Type I, Class A borosilicate glass (Corning Code 7740), delivering exceptional resistance to concentrated acids, alkalis, organic solvents, and aggressive cleaning reagents
• Rim & Wall Engineering: Heavy-duty tooled top rim minimizes chipping during routine washing and stopper insertion, while controlled uniform sidewall thickness prevents localized thermal stress points during direct hotplate heating
• Thermal Tolerances & Autoclavability: Rated for continuous working temperatures up to 230°C (446°F) and intermittent excursions up to 490°C; withstands thermal shock differentials up to 160°C and repeated steam autoclaving cycles at 121°C (250°F)
• Standards & Compliance: Manufactured to meet ASTM E-1404 (Type I, Class 1 Standard Specification for Laboratory Glass Conical Flasks) and ASTM E-438 (Type I, Class A glass composition)
• Primary Application: Acid-base titrations, swirling and mixing viscous solutions without spillage, microbiological broth and agar media preparation, rotary/orbital shaker culturing, and general analytical wet chemistry