Analytical tube activatorIt is a professional instrument used in the analysis and detection fields such as gas chromatography and mass spectrometry to activate analytical tubes, playing an indispensable role in improving analysis accuracy and sensitivity. It mainly preprocesses the analytical tube by precisely controlling parameters such as temperature and gas flow rate. Under high temperature conditions, combined with specific carrier gases (such as nitrogen and helium) for purging, impurities, moisture, and other adsorbed substances that may exist inside the analytical tube are removed to restore it to its initial clean and highly active state, preparing for accurate adsorption and analysis of the target compound in the future.
It generally consists of heating system, gas control system, temperature monitoring and control system, and analytical tube loading device. The heating system provides a stable and adjustable high-temperature environment; The gas control system precisely controls the flow rate and velocity of the carrier gas to ensure the uniformity and effectiveness of the activation process; The temperature monitoring and control system provides real-time feedback and adjusts the temperature to ensure the accuracy of the activation temperature; The analytical tube loading device facilitates the installation and removal of analytical tubes.
Analytical tube activatorIts core features are as follows:
1、 Accurate temperature control ensures activation effect
Wide temperature range and high temperature control accuracy
The activation temperature can usually cover temperatures above 50 ℃~400 ℃ (some models can reach 500 ℃), adapting to the activation requirements of different adsorbents (such as Tenax tubes with activation temperatures mostly ranging from 250 ℃~350 ℃, and activated carbon tubes requiring 300~400 ℃).
High temperature control accuracy (± 1 ℃~± 0.1 ℃), avoiding temperature fluctuations that may cause incomplete activation or overheating failure of adsorbents (such as some polymer adsorbents that are prone to decomposition at high temperatures).
Program heating function
Support multi-stage program heating, simulate the temperature change process of the analytical tube in actual sampling/analysis, gradually remove residual interferences, and improve purification efficiency. For example, first cool down to remove moisture, then activate the main pollutants at high temperatures, and finally cool down to storage temperature.
2、 Flexible air path design ensures thorough purification
Inert gas protection and flow control
High purity inert gases (such as nitrogen and helium) are used as carrier gases to avoid oxidation of the adsorbent during the activation process (especially at high temperatures), while also carrying the resolved pollutants out of the tube.
The carrier gas flow rate can be accurately adjusted (such as 0~500mL/min), supporting the activation requirements of different specifications of analytical tubes (such as 1/4 inch, 6mm outer diameter), with high flow stability (fluctuation ≤± 2%), ensuring uniform blowing.
Multi channel parallel processing
Most models support simultaneous activation of multiple tubes (commonly 4-24 channels), which can batch process analytical tubes to improve experimental efficiency, especially suitable for environmental monitoring and laboratory batch sample pretreatment scenarios.
Independent control between channels (some models), capable of simultaneously processing analytical tubes for different types of adsorbents without interfering with each other.
3、 Safety and reliability design
Overheating protection and leakage prevention structure
Built in overheating protection devices (such as temperature sensors and fuses) will automatically cut off power when the actual temperature exceeds the set upper limit, preventing equipment damage or adsorbent burnout.
The analytical tube interface adopts high-temperature resistant sealing components (such as silicone sealing rings and metal card sleeves) to ensure the sealing of the gas path and avoid the leakage of carrier gas, which may lead to a decrease in activation efficiency or the diffusion of harmful gases.
Exhaust gas treatment function
Equipped with exhaust gas outlet, it can be connected to exhaust gas collection devices (such as activated carbon adsorption tank, tail gas burner) to safely treat volatile organic compounds (VOCs), toxic gases and other substances released during the activation process, avoiding pollution of laboratory environment or endangering the health of operators.
4、 Automation and intelligent operation
Programmable and timed functions
Support preset activation programs (temperature, time, flow parameters), automatically run after one click start, reducing manual intervention. For example, setting the program "activate at 300 ℃ for 2 hours → cool down to 50 ℃" does not require full monitoring.
After the timed end, the heating will automatically stop and prompt, and some models can automatically switch to low-temperature blowing mode for easy storage of the analytical tube.
Convenient human-computer interaction
Equipped with high-definition display screen and touch/button operation interface, it can intuitively view real-time temperature, flow rate, remaining time and other parameters, and support program saving and calling (such as storing 10-50 sets of commonly used programs).
5、 Adaptability and durability
Compatible with multiple specifications of analytical tubes
Can adapt to analytical tubes of different lengths (such as 150mm, 200mm), inner diameters (such as 4mm, 6mm), and materials (glass, stainless steel), and achieve flexible switching by changing fixtures or interfaces.
High temperature resistant materials and long lifespan
The heating module is made of high-temperature resistant alloys (such as nickel chromium alloys) or ceramic materials, which are resistant to oxidation and corrosion, ensuring long-term stable operation; Gas path components (such as pipelines and valves) are mostly made of stainless steel or polytetrafluoroethylene materials, which are resistant to aging and have strong inertness, avoiding contamination of the analytical tube.