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Laboratory Screw Cap Flasks

Laboratory Screw Cap Flasks
Brand: Cole-Parmer
Product Code: MFR2801
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Specifications: (see all)
Flask type
Volumetric flask (Class A), color-coded (red, blue, green, yellow markings)
Type Material
Low extractable borosilicate glass, Class A
Volume (ml/L)
From 25 mL to 1000 mL (options: 25, 50, 100, 250, 500, 1000 mL)
Neck diameter (mm)
Standard neck with ground glass stopper (No. 9, No. 13 etc., depending on capacity)
Base diameter (mm)
Varies by capacity: approx. 40 mm (25 mL) to 100 mm (1000 mL)
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Screw cap flasks are practical and secure laboratory vessels used for storing reagents, samples, and conducting chemical reactions in a sealed environment. Their reliable threaded cap ensures airtight closure, making them particularly suitable for volatile, toxic, or valuable substances. These flasks are manufactured from high-quality glass or durable laboratory plastic, resistant to aggressive chemicals and high temperatures.

By using screw cap flasks, laboratories can minimize the risk of leaks and contamination, ensuring both experiment integrity and personnel safety. They are widely used in analytical chemistry, microbiology, pharmaceuticals, and biotechnology. The assortment includes flasks of various volumes – from small sample containers to large reaction vessels – making them a versatile solution for any modern laboratory.

Tags: Flasks

Flasks
Flask type
Volumetric flask (Class A), color-coded (red, blue, green, yellow markings)
Type Material
Low extractable borosilicate glass, Class A
Volume (ml/L)
From 25 mL to 1000 mL (options: 25, 50, 100, 250, 500, 1000 mL)
Neck diameter (mm)
Standard neck with ground glass stopper (No. 9, No. 13 etc., depending on capacity)
Base diameter (mm)
Varies by capacity: approx. 40 mm (25 mL) to 100 mm (1000 mL)
Height (mm)
From 11.8 cm (25 mL) to 32 cm (1000 mL)
Wall thickness (mm)
Reinforced laboratory walls, resistant to thermal shock
Bottom type
Flat bottom
Graduation marks
Single graduation ring (TC — to contain) with color coding
Accuracy class
Class A, complies with ASTM E288
Stopper or cap availability
Yes, supplied with ground glass stopper
Stopper material
Glass, standard taper
Sealing tightness
Leak-proof ground glass joint
Chemical resistance
High resistance to acids, alkalis, and organic solvents
High temperature resistance (°C)
Up to +550 °C
Autoclavability
Yes
Thermal shock resistance
Yes, resistant to standard laboratory thermal shock
Reusability
Yes
Single-use
No
Compatibility with laboratory holders and racks
Yes, fits standard racks and clamps
Labeling area availability
Matte finish marking area for pencil writing
Packaging
Depending on capacity: 1 piece or packs of 6
Dimensions (L×W×H)
Vary by capacity (e.g., 11.8 × 4 × 4 cm for 25 mL, up to 32 × 10 × 10 cm for 1000 mL)
Country of origin
USA
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