The selection of test tube specifications for parallel light reactors is a crucial factor in ensuring the smooth progress of experiments. The following are key considerations for selecting test tube specifications:

Material

• Quartz glass is commonly used for test tubes in parallel light reactors due to its excellent transmittance to ultraviolet and visible light. This ensures that light can penetrate and excite the reaction smoothly.

Specifications

1. Inner Diameter: The inner diameter of the test tube is determined based on the amount of reactant required for the experiment and the reaction conditions. Generally, a larger inner diameter can accommodate more reactants, but it may also affect the penetration of light and the uniformity of the reaction. Therefore, the specific needs of the experiment and reaction conditions should be considered comprehensively when selecting the inner diameter.

2. Length: The length of the test tube also affects the penetration of light and the uniformity of the reaction. Longer test tubes may cause more attenuation of light during penetration, thereby affecting the reaction effect. Therefore, when selecting the length of the test tube, it is necessary to ensure that light can fully penetrate and excite the reaction.

3. Capacity: The capacity of the test tube is usually related to its inner diameter and length, and is determined based on the amount of reactant required for the experiment and the reaction time. Common test tube capacities include 5mL, 10mL, 20mL, 50mL, and other specifications, as well as customizable large-scale tubes. When selecting, it should be ensured that the selected specification can meet the experimental needs and have appropriate allowance to accommodate possible reactant expansion or gas generation.

Compatibility

• The selected test tube should be compatible with the interface and fixture of the parallel light reactor to ensure that the test tube can be stably installed on the instrument and receive uniform illumination.

Temperature Control

• To control the reaction temperature, test tubes are usually equipped with a temperature control jacket or water bath. When selecting test tubes, it is necessary to ensure that the selected specification matches the temperature control method to ensure that the reaction is carried out at a constant temperature.

Safety

• The test tube should have sufficient strength and stability to withstand the pressure and temperature changes during the experiment. At the same time, to ensure experimental safety, parallel light reactors are usually equipped with safety protection devices such as water cut-off alarm devices and overheat protection. When selecting test tubes, it is necessary to ensure that the selected specification complies with relevant safety standards and requirements.

Additional Considerations

• Before selecting the test tube specification, it is necessary to fully understand the specific needs of the experiment and the reaction conditions, including the amount of reactant, reaction time, and lighting conditions.

• The instruction manual of the parallel light reactor usually provides detailed information about the test tube specifications and compatibility. When selecting test tubes, it is necessary to carefully read the instruction manual and ensure that the selected specification matches the instrument.

the selection of test tube specifications for parallel light reactors needs to be determined based on experimental needs, instrument manuals, and professional advice. When selecting, it is necessary to comprehensively consider the material, specifications, compatibility, temperature control method, and safety of the test tube to ensure that the selected specification can meet the experimental needs and ensure the safety and smooth progress of the experiment.