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Heavy-duty borosilicate glass beakers are the best beakers available. The beakers were designed to achieve tremendous mechanical strength with student use in mind.

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Put simply, these are the best beakers available. They were designed to achieve tremendous mechanical strength with student use in mind. Yes, they are more expensive, but we have customers who tell us that they last four to five times longer than standard beakers.

How to clean and wash glassware beakers
Wash lab beaker glassware as quickly as possible after use. If the Science beaker glassware cannot be washed immediately, then place it in the sink or a container to soak. Frequently, this single step will loosen material that later becomes very stubborn.
Actual washing should be done with detergents like those in this section. The water should be as hot as can be tolerated. Brushes should be used to help remove stubborn deposits. Avoid using any worn brushes with metal that can scratch the glass and accelerate breakage, rendering the vessel unsafe. Glassware that is heated will break more easily from such a scratch than will glass at room temperature.
Do not allow even weak acids to come in contact with a piece of glassware before the detergent (or soap) is thoroughly removed. If this happens, a film of grease may form on your beaker glassware.
Grease is best removed in a weak (10% or less) solution of sodium carbonate. Acetone may be used—but take all precautions.
Be sure all detergents, soaps and cleaners are rinsed from your beaker glassware or the residue will interfere with later chemical reactions. Rinse in tap water and then dip-rinse in a container of distilled water.
Use draining racks to dry the glassware and reduce breakage.

What is borosilicate glass? Borosilicate glass contains boron trioxide which makes it much less prone to fracture due to extreme temperatures and therefore ideal for a laboratory environment. Borosilicate glass is actually less soluble than standard glass, preventing unwanted materials from leaching into the glass or vice versa.

Chemistry Glass beakers can be heated to much higher temperatures than the plastic beakers counterparts, while offering higher clarity for content visibility and measuring. Glass chemsitry lab beakers feature uniform sidewalls and bottom thicknesses with a flat bottom and a beak, or small spout, for easier pouring. Glass chemistry science beakers may have graduated markings on their side, though a graduated cylinder or volumetric flask is recommended for precise volume measurements.