Fisherbrand Heavy-Duty 250ml Glass Beakers (Pack of 12)

With thick uniform walls and evenly tooled top rims, the Fisherbrand Heavy-Duty 250ml Glass Beakers (Pack of 12) are engineered to withstand mechanical shock and other harsh applications more effectively than standard wall beakers. A spouted design has also been incorporated onto these glass beakers, ensuring optimum performance is maintained.

What's Included?

• 12 x Heavy-Duty Low-Form Beakers

Technical Specifications

• Type: Beaker
• Accuracy: ±5%
• Material: Borosilicate Glass
• Capacity: 250ml
• Diameter: 6.7cm (2.63 in.)
• Height: 9.2cm (3.62 in.)
• For Use With: Provides improved safety under extreme conditions such as mechanized washing and rough handling
• Disposable: No
• Graduated: Yes
• Graduation Range: 25 to 200ml
• Increments: 25ml
• Label Type: Matte Finish Marking
• Includes: Spout
• Scale: Dual Scale
• Certifications: USP, ASTM E438, ASTM E960

Key Features

• Borosilicate glass is chemical and heat resistant, low coefficient and allows for direct seals
• Evenly tooled top rim for extra wall thickness and uniformity throughout
• Low-form with spout and graduations allows for easy and mess-free use
• Heavy-duty design offers superior durability for mechanized washing and rough handling
• Meets ASTM™ Specification E 960, Type II requirements
• Designed to hold 250ml, these beakers hold liquids and substances for accurate readings
• Graduated design and matte finish increases reading accuracy in lab experiments and research
• Beaker design with wider opening allows stirring of chemicals and substances
• Beakers come in a pack of twelve for cost efficiency and convenience, perfect for all laboratories

What Are the Fisherbrand Heavy-Duty Low Form Beakers For?

Made of borosilicate glass, these heavy-duty beakers have a low-form style and feature a sturdy construction that is ideal for mechanical shock and other harsh applications. A spout is also included on these beakers for optimum performance.

What Are These Fisherbrand Lab Beakers Made Of?

These Fisherbrand lab beakers are made entirely out of borosilicate glass. This type of glass has various benefits important for experimentation:

• Chemically resistant, making it ideal for use with most substances, particularly acids
• Allows high maximum temperatures of up to around 500°C for a broad range of experiments
• Cover a wide range of thermal expansions, enabling direct seals with various metals and alloys
• Low coefficient of thermal expansion makes these beakers shatter-resistant under rapid temperature changes

What Are Some of the Other Physical Properties of Borosilicate Glass?

The physical properties of borosilicate glass are as follows:

• Coefficient of expansion (20 to 300ºC):  3.3 x 10^-5/ºC
• Density: 2.23g/cm³
• Refractive index (Sodium D line): 1.474
• Dielectric constant (1MHz, 20ºC): 4.6
• Specific heat (20ºC): 750J/kgºC
• Thermal conductivity (20ºC): 1.14W/mºC
• Poissons Ratio (25 to 400°C): 0.2

What Is the Typical Chemical Composition of Borosilicate Glass?

Below is a table demonstrating the typical chemical composition of borosilicate glass (% by weight):

Are These Lab Glass Beakers Certified?

Yes, these Fisherbrand lab glass beakers have the following certifications/compliance: USP, ASTM E438, ASTM E960. These certifications provide total peace of mind on the quality of these glass beakers for laboratory usage.

Please Note: Not recommended for use on hotplates where significant thermal gradients exist due to a lack of agitation of contents or absence of a temperature control.

Are Any Other Volume Capacities Available?

Yes, the following are also available:

• Fisherbrand Heavy-Duty 400ml Glass Beakers (Pack of 12)
• Fisherbrand Heavy-Duty 600ml Glass Beakers (Pack of 12)
• Fisherbrand Heavy-Duty 1000ml Glass Beakers (Pack of 12)
• Fisherbrand Heavy-Duty 2000ml Glass Beakers (Pack of 12)