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  • Perfect analysis of 16 kinds of TVOC in the new national standard (GB 50325-2020) - the solution of Deyan automatic thermal desorption instrument

    In order to meet the "GB 50325-2020 standard for indoor environmental pollution control of civil building engineering", steadfast Deyan provides the following solutions, which fully meet the requirements of 16 kinds of TVOC injection detection. The national standard GB 50325-2020 (standard for indoor environmental pollution control of civil construction engineering) will be implemented on August 1, 2020, and the original GB 50325-2010 will be abolished. The standard for the control and monitoring of total volatile organic compounds (TVOC) has been revised as follows: 1

    2020-07-08 Practical analysis one thousand two hundred and six

  • On the promotion and promotion of thermal analyzers in GB 50325-2020

    Dear users: with the gradual decline of the epidemic situation, most enterprises have begun to return to work. As a high-quality service provider, steadfast Deyan will certainly move forward with enterprises and provide better solutions for thermal analyzer users. Thank you for your trust and support to Beijing steadfast Deyan Instrument Co., Ltd. On August 1, the state will implement the new standard GB 50325-2020. In order to ensure the user's use effect and the attitude of being responsible for the user, our company provides the upgrading and maintenance service for the ex factory thermal analyzer to ensure that the instrument is in the

    2020-06-15 Practical analysis two hundred and fifty-seven

  • 2020 chinalab Instrument Exhibition - New desorbing products of Tashi Deyan

    Thank you for your long-term trust and support! Guangzhou Branch of our company is scheduled to attend the technical seminar of China Lab 2020 Guangzhou International analytical testing and laboratory equipment exhibition on 29th of this month. Hope to discuss and exchange with customers and friends through this opportunity, so that we can have more in-depth cooperation, common development and progress. We are honored to have you here! Time: July 29, 2020 location: Guangzhou Poly World Trade Expo Hall Guangzhou steadfast booth: 6e07 exhibits products

    2020-07-19 Practical analysis twenty-one

  • Determination of solvent gasoline in air by thermal desorption

    The solvent gasoline in the air was collected by activated carbon tube. The sample was injected after solid pyrolysis and absorption. The sample was separated by tetra (2-cyanoethoxymethyl) methane and glass microsphere in series. The sample was detected by flame ionization detector (FID). Thermal desorption device: the thermal desorption device is mainly composed of heater, controller, thermometer and gas flow controller. The temperature control range is 100 ~ 350 ℃, the desorption gas is nitrogen, and the flow control range is 50 ~ 100ml / min. The structure of the thermal desorption device should make the activated carbon pipe easily inserted into the heater, and the gas passing through the pipe should be preheated first

    2020-07-17 Practical analysis thirty

  • Principle and application of thermal desorption instrument

    Thermal desorption instrument is an instrument for monitoring and analyzing production and living environment with solid adsorbent. It is mainly composed of temperature control system, flow regulation device and heating system. The heating system consists of heating furnace and quick plug. It is advanced, scientific and easy to operate. Application fields of thermal desorption instrument: 1. Occupational safety, industrial health and environmental monitoring; 2. Rapid identification of unknown atmosphere; 3. Analysis of spices and flavors; 4. Assessment of toxic substances accidents (when personnel can safely return to the accident site); 5. Environmental safety monitoring of chemical weapons warehouse; 4;

    2020-07-17 Practical analysis twenty-seven

  • Six key points in daily maintenance of automatic thermal desorption instrument

    Thermal analysis injection technology is a widely used injection technology. The main equipment of thermal analysis injection technology is thermal desorption instrument. The principle of thermal desorption is the same as that of purge and trap technology, and it can be regarded as a part of purge and trap injection. Thermal desorption sampling technology has been widely used in life science, industry, agriculture, environmental protection, pharmaceutical, tobacco, education, petrochemical, toxicology, food, electronics and many other fields. Six key points of daily maintenance of automatic thermal desorption instrument 1. For the first time, the operator of autoclave must be familiar with at least one person

    2020-07-17 Practical analysis sixteen

  • Basic operation method of sampling tube aging instrument

    The sampling tube aging instrument adopts the integrated design of monitoring unit and power unit. The monitoring unit adopts high-speed A / D and D / A, which makes the measurement and control more rapid; the power unit adopts new high-power devices, which is a small volume and high efficiency battery maintenance instrument. Full function analysis software: the software is designed in Chinese, which can automatically generate voltage, current, curve, and test report (including excel table and word document). The analyzer has battery discharge mode, charging mode and activation mode. It can be aimed at the actual situation of different backward batteries

    2020-07-17 Practical analysis twenty-three

  • What do you know about the dual channel secondary thermal desorption instrument?

    Desorption, also known as thermal desorption. The dual channel secondary thermal desorption instrument refers to heating the soil polluted by organic matter to above the boiling point of organic matter by heating, so that the organic matter adsorbed in the soil volatilizes into gaseous state and then separated and treated. It is a new type of sample pre-treatment device, which combines two thermal desorption instruments into one, and can be used for two gas chromatographs at the same time, which is economical and practical. The dual channel thermal desorption instrument is a dual channel full-automatic direct injection thermal desorption instrument. The gas path adopts the combination of electric six-way valve and solenoid valve, which can automatically program the desorption, injection and back blowing of adsorption tube. The heating temperature of adsorption tube and pipeline can be independent

    2020-07-17 Practical analysis thirty

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