Measuring Cylinder Lab
Capacity(ml):5/10/25/50/100/250/500/1000/2000/5000
2.Stoppered measuring cylinder
Capacity(ml):5/10/25/50/100/250/500/1000/2000
***Price List for whole above, inquire us to get
Description
Technical Parameters
The measuring cylinder, also known as a graduated cylinder, is an indispensable tool in quantitative chemical analysis. A typical measuring cylinder is constructed from glass or high-grade plastic, featuring a narrow cylindrical body with a stable base. The cylinder is marked with a series of graduated lines, which indicate the volume of liquid contained within. The design is optimized for minimizing parallax errors, with the markings placed at regular intervals to facilitate accurate reading. The material of construction, whether glass or plastic, is chosen based on the compatibility with the liquids being measured and the required level of precision.
Products Description
|
|
||||||||
| Glass Measuring cylinder | ||||||||
| Model | Capacity(ml) | Tolerance Range(±ml) | Scale Division(ml) | External diameter (of a body) (mm) | Height(±3mm) | Qty/Ctn | ||
| AC-1 | 5 | 0.1 | 0.1 | 13 | 122 | 144 | ||
| AC-2 | 10 | 0.2 | 0.2 | 16 | 140 | 144 | ||
| AC-3 | 25 | 0.5 | 0.5 | 22 | 162 | 144 | ||
| AC-4 | 50 | 0.5 | 1.0 | 26 | 195 | 120 | ||
| AC-5 | 100 | 1.0 | 1.0 | 32 | 250 | 80 | ||
| AC-6 | 250 | 2.0 | 2.0 | 43 | 300 | 32 | ||
| AC-7 | 500 | 5.0 | 5.0 | 55 | 350 | 24 | ||
| AC-8 | 1000 | 10.0 | 10.0 | 68 | 440 | 12 | ||
| AC-9 | 2000 | 20.0 | 20.0 | 88 | 510 | 6 | ||
| AC-10 | 5000 | 50.0 | 50.0 | 130 | 590 | 4 | ||
|
|
||||||||
| Stoppered measuring cylinder | ||||||||
| Model | Capacity(ml) | Graduation(ml) | Capacity tolerance(±ml) | external diameter (of a body) (mm) | Height(mm) | Qty/Ctn | ||
| 1603-5 | 5 | 0.1 | 0.05 | 13 | 125 | 288 | ||
| 1603-10 | 10 | 0.2 | 0.1 | 16 | 150 | 144 | ||
| 1603-25 | 25 | 0.5 | 0.25 | 22 | 180 | 144 | ||
| 1603-50 | 50 | 1.0 | 0.25 | 26 | 215 | 96 | ||
| 1603-100 | 100 | 1.0 | 0.5 | 32 | 270 | 72 | ||
| 1603-250 | 250 | 2.0 & 5.0 | 1.0 | 43 | 320 | 48 | ||
| 1603-500 | 500 | 5.0 | 2.5 | 55 | 380 | 24 | ||
| 1603-1L | 1000 | 10.0 | 5.0 | 68 | 460 | 12 | ||
| 1603-2L | 2000 | 20.0 | 10.0 | 88 | 530 | 8 | ||
Types of Measuring Cylinders
Measuring cylinders come in different materials and sizes to cater to various laboratory needs. The most common materials are glass and plastic. Glass measuring cylinders are preferred for their chemical resistance and thermal stability. They can withstand a wide range of temperatures and are less likely to react with most chemicals. Borosilicate glass, in particular, is known for its excellent thermal shock resistance, making it suitable for experiments involving temperature changes.
Plastic measuring cylinders, on the other hand, are lighter, less fragile, and more cost - effective. They are ideal for routine laboratory work where the risk of breakage is high, such as in educational settings. However, they may not be as resistant to certain chemicals as glass cylinders and can deform at high temperatures.
In terms of size, measuring cylinders range from small ones with a capacity of 5 ml to large ones that can hold up to 2000 ml. The choice of size depends on the volume of the liquid to be measured and the level of precision required. For example, in a micro - scale experiment where only a few milliliters of a reagent are needed, a small measuring cylinder with fine graduations would be more appropriate.
Usage
● PreparationBefore using the measuring cylinder, it is essential to ensure that it is clean and free from any residues that could affect the accuracy of the measurement. This can be achieved by rinsing the cylinder with the liquid to be measured or with a suitable solvent. Additionally, the user should ensure that the cylinder is placed on a level surface to avoid any tilting that could lead to inaccurate readings. ● Filling the CylinderWhen filling the measuring cylinder, it is important to pour the liquid slowly and carefully to avoid splashing or overflow. The liquid should be poured along the side of the cylinder to minimize the formation of bubbles, which can interfere with the reading. Once the cylinder is filled to the desired volume, the user should wait for the liquid to settle and for any bubbles to rise to the surface before taking a reading.
|
|
|
|
● Reading the MeniscusThe most critical aspect of using a measuring cylinder is reading the meniscus correctly. The meniscus is the curved surface of the liquid caused by the surface tension between the liquid and the glass. The correct reading is taken at the bottom of the meniscus, where the liquid surface appears flat. To ensure accuracy, the user should position their eye level with the meniscus and read the volume at the point where the liquid surface intersects the graduation mark. This step requires careful attention to avoid parallax errors, which occur when the user's eye is not at the same level as the meniscus. ● Emptying and CleaningAfter the measurement is taken, the cylinder should be emptied and cleaned thoroughly. This is important to prevent cross-contamination between different liquids and to maintain the accuracy of the cylinder for future use. The cleaning process should involve rinsing the cylinder with water or a suitable solvent and allowing it to dry completely before storing. |
Error Analysis
► Parallax Error
Parallax error is a common source of inaccuracy in volume measurements using a measuring cylinder. It occurs when the user's eye is not at the same level as the meniscus, leading to an incorrect reading of the volume. To minimize parallax error, the user should always position their eye level with the meniscus and read the volume directly from the graduation mark.
► Meniscus Reading Error
Incorrect reading of the meniscus can also lead to significant errors in volume determination. This can occur if the user reads the volume at the top of the meniscus instead of the bottom or if they do not wait for the liquid to settle before taking a reading. To avoid this error, the user should be trained to read the meniscus correctly and to wait for the liquid to settle before taking a measurement.
► Temperature Effects
Temperature can also affect the accuracy of volume measurements. Most liquids expand or contract with changes in temperature, which can lead to changes in volume. To minimize temperature effects, the user should ensure that the liquid and the measuring cylinder are at the same temperature before taking a measurement. Additionally, the user should be aware of the temperature coefficient of expansion of the liquid and adjust the volume reading accordingly if necessary.
► Calibration Errors
Calibration errors can occur if the measuring cylinder is not properly calibrated or if the calibration markings are worn or damaged. To avoid calibration errors, the user should ensure that the measuring cylinder is regularly calibrated and that the markings are in good condition. If the markings are worn or damaged, the cylinder should be recalibrated or replaced.
Practical Examples of Measuring Cylinder Usage
● Titration Experiments
In a titration experiment, a measured volume of a solution (titrant) is added to a known volume of another solution (analyte) until a chemical reaction is complete. The volume of the titrant added is measured using a measuring cylinder. The accuracy of this volume measurement is crucial for determining the concentration of the analyte. For example, in an acid - base titration, a small error in the volume of the titrant can lead to a significant error in the calculated concentration of the acid or base.
● Preparation of Solutions
When preparing a solution of a specific concentration, a measuring cylinder is used to measure the volume of the solvent and the solute. For instance, to prepare a 1 M solution of sodium chloride, a measured volume of water (solvent) is added to a known mass of sodium chloride (solute) in a container. The volume of water is measured using a measuring cylinder to ensure the correct concentration of the solution.
● Environmental Sampling
In environmental science, measuring cylinders are used to collect and measure the volume of water samples from rivers, lakes, or oceans. The accuracy of these volume measurements is important for analyzing the chemical composition of the water and assessing environmental pollution levels.
Conclusion
Measuring cylinders are essential tools in laboratories, providing accurate volume measurements for a wide range of experiments. Understanding their importance, proper usage, calibration techniques, and common pitfalls to avoid is crucial for researchers and students alike. By mastering the art of using measuring cylinders, one can ensure the accuracy and reliability of experimental results, contributing to the advancement of science and technology. Whether in a chemistry lab for titration experiments, in a biology lab for preparing solutions, or in an environmental science lab for sampling, measuring cylinders play a vital role in the scientific process. As technology continues to advance, the design and functionality of measuring cylinders may evolve, but their fundamental purpose of providing precise volume measurements will remain unchanged. Therefore, it is important for scientists and students to stay updated on the latest developments in measuring cylinder technology and best practices for their use.
Hot Tags: measuring cylinder lab, China measuring cylinder lab manufacturers, suppliers, factory, 20l Rotovap, Hydrothermal Autoclave Reactor With Teflon Chamber 100ml, Teflon Autoclave, Zp17 Rotary Tablet Press, Pill Press Equipment, Short Path Distillation Kit
Previous
1000ML Measuring CylinderNext
Planetary Micro MillSend Inquiry
