Laboratory glasses and beakers
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Laboratory glasses and beakers

Essential glassware/LabFlasks/conical-flask-with-a-narrow-throat">LaboratoryBeakers and Graduated Glassware Collection


Last Tuesday, a colleague rushed into the prep room asking for "something to mix 250ml of buffer solution" while juggling three sample vials. She grabbed a beaker from our rack, and within seconds, her reagents were properly combined. That's the beauty of having reliable glassware within arm's reach—it becomes second nature to your workflow.

Laboratory beakers and graduated cylinders form the backbone of daily bench work, from quick dilutions to complex solution preparations. Whether you're setting up a titration series or simply need to hold a sample while you work, these vessels handle the routine tasks that keep experiments moving forward.

Volume Capacity Options and Graduation Markings


Beakers come in sizes ranging from 10ml to 5000ml, with permanent white ceramic graduations providing ±5% accuracy—sufficient for most preparatory work where precision matters but absolute exactness isn't critical. When you need tighter tolerances, measuring cylinders deliver ±0.5% accuracy, making them indispensable for volumetric protocols.

I keep 50ml, 250ml, and 1000ml beakers within easy reach because they cover 90% of my daily needs. The spout design matters more than you'd think—a well-formed rim prevents drips when transferring liquids to a Conical flask with thread and polypropylene cap for sealed storage or into a Conical flask with grind for reflux setups.

Borosilicate Glass Durability Standards


Type 1 Class A borosilicate glass conforming to ISO 3585 standards handles thermal shock like a champion. The material tolerates -70°C to +500°C without cracking, which means you can pour cold solvents into a warm beaker without hesitation. The low thermal expansion coefficient maintains dimensional stability during heating cycles.

  • Chemical resistance: Withstands acids, bases, and organic solvents without etching
  • Thermal cycling: Survives repeated heating and cooling in water baths or on hot plates
  • Autoclavable: Sterilizes at 121°C without degradation

Selecting the Right Vessel for Mixing and Measuring


Choose beakers for mixing, heating, and approximate measurements. Their wide mouths accommodate stir bars and thermometers easily. When running distillations, beakers collect distillate from Condensers or a Straight tube condenser effectively. For reactions requiring narrow openings and minimal evaporation, switch to a Conical flask with a narrow throat instead—the geometry reduces surface area exposure while still allowing adequate mixing.

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