Reaction containers for small amounts of reagents are: test tubes, alcohol lamps, glass rods, test tube brushes, and drop bottles. The glass rod is used for stirring and drainage, the alcohol lamp is used as the heat source, and the dropper bottle is used for holding and storing liquid reagents.
What are the instruments that can be heated directly:
Test tubes, burning spoons, evaporating dishes, crucibles, etc. Answer: From the knowledge we have learned, we can know that the instruments that can be heated directly are: Test tubes, burning spoons, evaporating dishes and crucibles, etc.; those that need to be padded with asbestos nets are: beakers, flasks, Erlenmeyer flasks, etc.; instruments that cannot be heated include: funnels, measuring cylinders, gas bottles, etc.
1. Heating instruments in chemical experiments:
In chemical laboratories, heating instruments are usually used to heat reactants, solutions or media to promote chemical reactions or accelerate reaction rates.
Heating plate:
A heating plate is usually a flat metal surface with a heating element on it. It is commonly used for uniform heating under test tubes, beakers and other experimental vessels.
Hot plate magnetic stirrer:
The hot plate magnetic stirrer integrates the functions of hot plate and magnetic stirring into one, which can heat and stir the solution at the same time. By rotating the magnetic stirrer in the solution, uniform heating and mixing can be achieved.
Evaporating dish:
An evaporating dish is a shallow, wide container used to heat solutions and evaporate liquids. It is commonly used for concentrated solutions, crystallization and drying of solid materials.
Thermostatic bath:
A thermostatic bath is a temperature-controlled device used to heat liquids or samples within a specific temperature range. Thermostatic baths are often used for temperature-sensitive experiments, such as reaction kinetics studies.
2. Heating instruments in biological experiments:
In biological experiments, instruments that can be directly heated are usually used for sample processing, cell culture, protein analysis, etc. The following are some common heating instruments in biological experiments:
PCR machine:
PCR machine (polymerase chain reaction machine) is used to perform PCR reactions at a specific temperature. DNA is amplified and replicated. The PCR instrument can control the temperature of the reaction liquid in a precise temperature control manner.
Incubator:
An incubator is a constant-temperature device used for cell culture and microbial culture. The incubator has a temperature control function that provides a stable temperature environment to promote cell growth and conduct experiments.
Thermal cycler:
A thermal cycler is an instrument that can control temperature changes. It is used in experiments such as cell culture and DNA hybridization to achieve specific biological processes by controlling changes in temperature.