Overview
A laboratory beaker is a fundamental piece of equipment in scientific and industrial laboratories. It is designed for holding, mixing, and heating liquids, with graduated markings for approximate volume measurements. Beakers are available in various materials, including borosilicate glass for high thermal resistance and plastic for chemical compatibility. They come in standard sizes ranging from 50 mL to several liters, catering to diverse experimental needs. The simplicity of their design—featuring a flat bottom, cylindrical shape, and pouring spout—makes them indispensable in both educational and professional settings.
Physical and Chemical Properties
Borosilicate glass beakers, the most common type, exhibit high resistance to thermal shock and chemical corrosion, making them suitable for heating applications and use with aggressive chemicals. Plastic beakers, often made from polypropylene (PP) or polymethylpentene (PMP), are lightweight and shatterproof but have lower temperature tolerance. Beakers typically feature white or blue graduation markings for easy readability. The spout ensures controlled pouring, minimizing spills. Their transparent nature allows for visual monitoring of reactions and liquid levels.
Main Applications
Laboratory beakers are used across various fields, including chemistry, biology, pharmaceuticals, and industrial quality control. They serve as versatile containers for preparing solutions, conducting titrations, and performing simple reactions. In educational labs, they are essential for teaching basic laboratory techniques. Industrial applications include batch mixing, sample preparation, and process monitoring. Their durability and reusability make them cost-effective for routine lab work. Specialty beakers, such as low-form (Griffin) or tall-form (Berzelius), cater to specific tasks like evaporation or filtration.
Safety and Storage
Glass beakers should be handled carefully to avoid breakage and potential injury. Avoid sudden temperature changes to prevent cracking. Plastic beakers should not be exposed to open flames or temperatures exceeding their rated limits. Store beakers in a clean, dry environment, ideally on shelves or in cabinets to prevent dust accumulation. Inspect for cracks or chips before use, especially in glass variants. Always use appropriate personal protective equipment (PPE) when handling hazardous substances.
B2B Procurement Guide
When sourcing laboratory beakers, prioritize suppliers with certifications like ISO 9001 for quality assurance. Bulk purchases often qualify for discounts, but ensure consistency in material and manufacturing standards. Consider the specific needs of your lab—glass for high-temperature work or plastic for corrosive chemicals. Evaluate suppliers based on lead times, customization options (e.g., extra graduations or labels), and after-sales support. Prices vary by material and volume; borosilicate glass beakers typically cost $5–$30 per unit, while plastic versions range from $2–$20.
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