Laboratory is an important link in scientific research, teaching and industrial production. In the laboratory, a variety of laboratory tools and equipment play a key role. This article will introduce some commonly used laboratory tools and equipment, as well as their operating procedures.
Reagent bottles
The reagent bottle is one of the most common containers in a laboratory. It is used to store various reagents such as solutions, acids and bases. When using a reagent bottle, first check whether the mouth of the bottle is clean or not, then take an appropriate amount of reagent and drop the reagent into the desired container with a dropper or pipette.
Measuring cylinder
A measuring cylinder is a tool used to measure the volume of a liquid. When using a measuring cylinder, first place the cylinder on a flat, level table and slowly pour in the liquid to be measured until the surface touches the cylinder scale. Be careful to read the lower edge of the liquid level to avoid liquid pouring out.
Test Tubes
Test tubes are a tool used to perform small-scale experiments. When using a test tube, first insert the tube vertically into the test tube rack, then take the appropriate amount of reagent and drop it into the test tube using a dropper or pipette. When heating the test tube, pay attention to the tilt angle of the test tube to avoid spilling the reagent.
Microscope
A microscope is a tool used to observe tiny objects. When using a microscope, first adjust the lens so that it is in focus. The sample to be observed is then placed on a slide and held in place with a clamp. The slide is placed on the sample stage of the microscope and the details of the sample are observed by adjusting the lens and light source.
Balance
A balance is a tool used to measure the mass of a substance. When using a balance, first place the balance on a smooth countertop and then place the substance to be measured in the pan of the balance. Wait for the balance's signal to stabilize and record the mass.
Centrifuge
A centrifuge is a tool used to separate solids and liquids in a liquid mixture. When using a centrifuge, the mixture to be separated is first placed into a centrifuge tube, which is then placed into the rotor of the centrifuge. Adjust the centrifuge's speed and centrifugation time as needed, and when centrifugation is complete, remove the tube and separate the separated liquids from the solids.
Acid-base buret
Acid-base buret is a tool used to determine the concentration of acids and bases in a solution. When using an acid-base buret, the buret is first cleaned with a wash bottle, and then the solution to be measured is dropped into the buret using a pipette. The buret is then used to drop in the standard acid-base solution until the color of the solution changes. Record the amount of titrant, and calculate the concentration of acid-base in the solution to be measured based on the concentration and amount of titrant.
Conclusion
The above describes some of the commonly used laboratory tools and equipment and the procedures for their operation. These tools and equipment play a vital role in the laboratory and help researchers, teachers and industrial producers to perform various experiments and analyses. Proficiency in the use of these tools and equipment can improve the accuracy and efficiency of experiments and ensure the reliability of results.