Top 13 50 Ml Burets for Accurate Chemical Measurements

A buret is a laboratory instrument used for precise measurement and dispensing of liquid volumes. The 50 ml buret measures 50 milliliters and features a stopcock valve to control liquid flow. This versatile tool is essential for titration experiments and other applications requiring accurate liquid measurements.

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Reviews

Eisco 50mL Acrylic Buret

This lightweight acrylic buret features a durable PTFE stopcock that resists chemicals, moisture, and temperature changes. The 50 mL capacity measures to 0.1 mL precision, making it ideal for educational and laboratory use. Built to last, this well-reviewed buret has earned top ratings from users who appreciate its reliable performance and practical design.

50ml Shellbach Glass Burette

Crafted from premium quality glass with a white backing, this 31-inch Shellbach burette delivers exceptional accuracy for measuring clear liquids. The PTFE stopcock provides reliable liquid control, while blue graduation markings make it easy to read the scale. With a capacity of 50ml and a precision of 0.10ml, it meets rigorous DIN 12700 and ISO 385 standards for laboratory equipment.

Eisco Labs 50mL Borosilicate Burette

This simple burette delivers accurate measurements with its 0.1 mL graduations and borosilicate construction. The glass stopcock provides reliable control over the liquid flow. Perfect for everyday lab use, it’s a solid choice for students and casual laboratory users.

Hanna HI900150 50 Ml Burette Assembly

The 50ml burette assembly from Hanna Instruments integrates seamlessly with their automatic titration systems, featuring a precise 50ml syringe and chemically-resistant tubes. Its blue protection tubes and tube locks enhance both safety and convenience during use. Built to last with durable materials that maintain accuracy through repeated use, this assembly requires no installation instructions – it’s designed to plug-and-play with your Hanna titration system.

Eisco Labs 50mL Acrylic Burettes with PTFE Stopcock

These burettes offer precise 0.1mL measurements according to DIN ISO 385 standards. The chemical-resistant blue scale and PTFE stopcock make it a reliable addition to any laboratory setup. Built for durability with high-quality acrylic construction that resists most common laboratory chemicals.

50ml Schellbach Burette with Blue Graduations

This durable 50mL Schellbach burette features precision blue graduations and a clear white body with contrasting blue midline, while its borosilicate glass construction and autoclavable design make it a reliable addition to any laboratory setup.

Lab Safety Supply 6CDN8 50ml Burette

This glass burette combines precise measurements with clear visibility, making it an essential tool for laboratory work. The straight-bore design and metric graduations ensure accurate readings, while the durable construction can handle corrosive chemicals and repeated use. Whether you’re conducting titrations or other laboratory tests, this burette provides the precision you need for reliable results.

United Scientific 11502 Acrylic Burette, 50ml

The 50 mL acrylic burette combines precise measurements with durability, featuring a leakproof PTFE stopcock and individual calibration for accuracy. The clear acrylic body enables easy visual readings against the 0.1 mL graduations while providing resistance to most chemicals except hydrofluoric acid and concentrated ammonia solutions.

Lab Safety Supply 6CDR0 50ml Burette

The clear glass design with a PTFE stopcock and plug gives this burette lasting precision and reliable performance. The metric scale increments by 0.1 mL, allowing for accurate measurements between 0 to 50 mL. The overall height of 820 mm provides plenty of space for precise titration while maintaining a sleek, lab-friendly design.

United Scientific 229562 50ml Burette

Crafted from precision-engineered tubing, this 50ml burette delivers exceptional accuracy and reliability. The resilient white enamel graduations ensure easy reading, while the Class B certification speaks to its precision. The screw thread stopcock adds practical control to your measurements.

Kimble Buret 50 mL Class B

This small glass measuring tool, about the size of a common water bottle, helps scientists and students measure liquids very precisely. Made by a company run by veterans, it’s a dependable tool for any science lab.

United Scientific 229560 Glass Burette with Stopcock

The United Scientific 50ml burette combines precision with durability through its accurately bored glass construction and resilient white enamel graduations. The Class B accuracy meets rigorous laboratory standards while the straight-bore glass stopcock ensures reliable performance. Each component is crafted to deliver consistent results in demanding analytical applications.

GSC International 205-3-10 Mohr’s Style Burette, 50ml, Pack of 10

These glass burettes are built for precise liquid measurement, with each graduation marking 0.1 milliliters up to their 50-milliliter capacity. The reinforced opening helps prevent breakage, making them reliable for repeated use in a laboratory setting. To control the flow, you should use the recommended burette tip assembly. The pack of 10 is ideal for classrooms or labs where multiple measurements are needed.

Buyer’s Guide

A 50 mL buret is a specialized laboratory glassware item used for measuring and dispensing small volumes of liquid, typically during titration experiments in analytical chemistry. Understanding the key aspects of buret selection and usage will help you choose the right equipment for your scientific work.

Construction and Materials

Burets are made from borosilicate glass due to its excellent chemical resistance and thermal stability. Some burets feature PTFE (Teflon) liners for the inner tube to prevent leakage and extend the lifespan of the instrument. Look for sturdy, well-ground joints between the buret and its stopcock to ensure accurate volume measurements.

Calibration and Accuracy

Proper calibration is essential for accurate volumetric measurements. Burets should have calibration marks etched onto the outer glass to indicate the corrected volume readings. The stopcock should be sealed with a rubber element that can be precisely adjusted to control liquid flow. Check for any visible cracks or damage before each use to maintain accuracy.

Usage and Maintenance

Always use burets with appropriate pipettes to add standard volumes of liquid. Rinse burets with the solution they’ll contain before filling to prevent contamination. After use, clean the buret with distilled water and a mild detergent solution, then allow it to air dry completely to prevent staining. Regular maintenance of stopcock seals with appropriate lubricants ensures smooth operation over time.

Safety Considerations

When working with chemicals, always use burets in properly ventilated areas and wear appropriate personal protective equipment. Handle burets carefully to avoid breakage, as glass can cause serious injury. Store burets upright on a stable rack when not in use to prevent accidental damage.

FAQ

What is a 50 ml buret used for?

A 50 ml buret is a laboratory glass tube with a graduated scale that measures and dispenses liquid in precise increments, typically between 0.01 to 0.1 ml. It is commonly used in titration experiments to determine the concentration of a solution by reacting it with a solution of known concentration.

The buret’s precision makes it essential for accurate measurements in analytical chemistry, environmental testing, and other scientific applications where volume determination needs to be highly precise.

How does a 50 ml buret measure liquid volume?

The buret consists of an accurately scaled glass tube with a stopcock at the lower end. When filled with liquid, the stopcock controls the release of the solution, allowing precise measurements to be taken at each drop. The buret scale, which runs from 0 to 50 ml, enables measurements to be recorded with 0.1 ml precision.

The liquid is dispensed through the stopcock, and the final volume read from the scale. The difference between the initial and final readings gives the volume of liquid transferred.

What are the main components of a 50 ml buret?

Each buret features a glass tube with a precise internal diameter and a calibrated scale. A stopcock at the bottom controls the flow of liquid, while a rubber bulb or piston may be used for initial priming. Many burets include a boycot (or buret clamp) attachment point for secure positioning during use.

The glass tube usually measures 250-300 mm in length, with the stopcock located at the bottom to prevent air bubbles from entering the system. Some burets incorporate a safety lock to prevent accidental flow during handling.

How should a 50 ml buret be cleaned and maintained?

Before use, the buret should be flushed with the solution it will contain to ensure compatibility and prevent contamination. The stopcock should be oiled with a thin layer of glycerin or silicone lubricant to prevent sticking, but not enough to affect flow.

After use, the buret should be thoroughly rinsed with distilled water and left open to air dry. The stopcock can be protected with a cap to prevent dust accumulation. Regular maintenance includes checking for leaks and ensuring the scale remains clean and legible.

What are the main considerations when selecting a 50 ml buret?

Accuracy requirements determine the need for glass or plastic construction, with glass offering superior precision but greater weight and fragility. Options for stopcock material (Teflon, PTFE) affect flow control and maintenance needs.

The choice between straight or angled burets depends on the available workspace and visibility requirements. Additional features like automatic burets or digital readouts can enhance precision but increase cost and complexity.

How do I read the scale on a 50 ml buret?

Reading a buret requires careful attention to detail. The lowest point of the meniscus (the curved liquid surface) should be aligned with the highest graduation line below the meniscus. This reading is taken at eye level to prevent parallax errors.

The final buret reading is subtracted from the initial reading to determine the volume of liquid dispensed. For precise measurements, the buret should be placed on an even surface to prevent liquid movement during reading.

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