EISCO CH0240K Lab Burette Amber Graduations Ptfe Stopcock 50ML 0.1ML

( Brand: Eisco ), ( Manufacturer Part Number: CH0240K ), ( Part Type: Stopcock Burette )

Review EISCO Lab Burette 50ml Class 0.1ml Amber Graduations Ptfe Stopcock

The **Eisco CH0240K 50mL Laboratory Burette with 0.1mL Amber Graduations and PTFE Stopcock** is a precision-engineered glassware essential for accurate and reliable volumetric measurements in analytical chemistry, titration experiments, and laboratory procedures requiring high precision. Crafted from borosilicate glass, this burette is designed to withstand the rigors of frequent use while maintaining exceptional clarity and durability, ensuring consistent performance over time. Its amber-colored graduations marked at 0.1mL intervals provide clear, easy-to-read measurements even under varying lighting conditions, reducing the risk of parallax errors that can compromise results. The PTFE (polytetrafluoroethylene) stopcock is a standout feature, offering superior resistance to chemical corrosion, sealing, and wear compared to traditional rubber or glass stopcocks. This material ensures smooth, leak-free operation while maintaining chemical inertness, making it ideal for handling aggressive reagents such as acids, bases, and organic solvents. The 50mL capacity strikes a practical balance between versatility and precision, accommodating a wide range of titration applications without excessive volume waste. Whether used in educational settings to teach titration techniques or in professional laboratories for routine analyses, this burette delivers the accuracy and reliability demanded by modern chemical research. Its robust construction, combined with the precision of its graduations and the functionality of the PTFE stopcock, makes it an indispensable tool for chemists seeking dependable volumetric measurements.

### **Pros and Cons of buying a Eisco CH0240K 50mL Lab Burette (0.1mL Graduations, Amber, PTFE Stopcock)**

1. **Precision and Accuracy** The 0.1mL graduations provide fine control, making it suitable for titrations and precise liquid measurements in laboratory settings.

2. **Durability** Constructed with borosilicate glass, which is chemically resistant and less prone to thermal shock compared to standard glassware.

3. **Amber Coloring** Helps protect sensitive solutions from light degradation, which is beneficial for compounds like vitamins, pharmaceuticals, or organic reagents.

4. **PTFE Stopcock** The Teflon (PTFE) stopcock reduces chemical corrosion and ensures smoother operation compared to rubber or glass stopcocks.

5. **Compatibility with Common Lab Standards** Meets typical laboratory requirements for volumetric glassware, ensuring reliable results in titrations and dilutions.

6. **Affordable for a Quality Burette** Compared to some high-end laboratory burettes, this model offers good value without sacrificing essential features.

7. **Easy to Clean** The smooth glass surface and PTFE stopcock make rinsing and maintenance straightforward, reducing contamination risks.

8. **Versatile Use** Suitable for acid-base titrations, redox titrations, and other volumetric analyses in educational and industrial labs.

1. **Limited Volume** At 50mL, it may be too small for large-scale experiments or applications requiring higher volumes.

2. **Manual Operation** Requires manual control of the stopcock, which can introduce slight variability in flow rate compared to motorized or electronic burettes.

3. **Potential for PTFE Wear** Over time, the PTFE stopcock may wear out, especially with frequent or aggressive use, requiring eventual replacement.

4. **Not Calibrated** Like most standard burettes, it may not come pre-calibrated, requiring initial calibration for accurate results.

5. **Fragility** Despite borosilicate glass, it can still break if dropped or mishandled, posing a safety risk in busy labs.

6. **Limited Brand Recognition** Eisco is a well-known educational brand but may not have the same reputation for precision as specialized labware manufacturers (e.g., Corning, Schott).

7. **No Built-in Drip Tip** Some burettes include a drip tip for easier dispensing; this model may require additional adapters or accessories.

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### **Conclusion**

The **Eisco CH0240K 50mL amber burette with PTFE stopcock** is a solid choice for **educational laboratories, small-scale titrations, and general chemical analysis** where precision and light protection are priorities. Its **affordability, durability, and fine graduations** make it a practical option for students and researchers working with moderate volumes. However, users should consider its **small capacity, manual operation, and potential long-term wear** before purchasing. If the application demands **higher volumes, automated dispensing, or extreme chemical resistance**, a more specialized burette may be preferable.

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### **Recommendation**

- You need a **reliable, cost-effective burette** for **acid-base or redox titrations** in an educational or small research setting.

- You work with **light-sensitive solutions** (amber glass helps).

- You prioritize **ease of cleaning and PTFE stopcock durability** over advanced automation.

- You require **larger volumes** (e.g., 100mL or 250mL burettes).

- You need **motorized or electronic burettes** for automated titrations.

- Your work involves **extremely corrosive chemicals** that may degrade PTFE over time.

- You require **pre-calibrated or high-precision laboratory glassware** from specialized brands.

For most **undergraduate labs or home chemistry setups**, this burette provides an excellent balance of **performance and value**.

Details:

INDUSTRIAL QUALITY Made of high quality, heavy duty, brisket 3.3 glass. Brand New EISCO Lab Burette, 50mL - Class A 0.1mL Amber Graduations PTFE Stopcock Brisket Glass Buret, Manufacturer model: CH0240K 50ML Burette with capacity. Calibrated to deliver. PTFE STOPCOCK Includes an attached straight bore stopcock.

CLASS A 0.05mL accuracy conforms with Class A, DIN ISO 385 standards. However, this will not affect the shipping times. , with excellent durability and chemical resistance. AMBER GRADUATIONS Features chemical-resistant amber markings with 0.1mL graduations.

part #: ch0240k prices

• $45.09-$71.45

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• brand: Eisco
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• part type: Stopcock Burette

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