Core Viewpoint - Tsinghua University has announced procurement intentions for 33 items of scientific instruments and equipment, with a total budget of 183 million yuan, scheduled for procurement between July and September 2025 [1][8]. Summary by Relevant Sections Procurement Overview - The procurement includes advanced instruments such as sensitive environmental biological aerosol and toxic solid-liquid gas rapid detection prototypes, water-lubricated bearings and vibration noise testing analysis systems, isostatic presses, electrochemical differential mass spectrometers, and a 300 kV cryo-transmission electron microscope [1][2]. Instrument Descriptions - **Electrochemical Differential Mass Spectrometer**: Combines electrochemistry and mass spectrometry to monitor volatile substances generated during electrochemical reactions, crucial for studying reaction mechanisms and catalyst activity [1]. - **Cryo-Transmission Electron Microscope (Cryo-TEM)**: Allows observation of biological samples at near-physiological conditions, overcoming limitations of traditional electron microscopy by using rapid freezing techniques to preserve sample structure [2]. - **Laser Vibrometer**: Measures vibration parameters such as velocity, displacement, and acceleration using laser Doppler effect and interference techniques [3]. Detailed Procurement List - The procurement list includes various instruments with specific budgets, such as: - Sensitive environmental biological aerosol detection machine: 4.06 million yuan - Water-lubricated bearing and vibration noise testing system: 1.95 million yuan - Electrochemical differential mass spectrometer: 2.62 million yuan - 300 kV cryo-transmission electron microscope: 45 million yuan [5][6][7]. Additional Procurement Information - Tsinghua University has previously announced multiple procurement intentions totaling over 2.13 billion yuan for various scientific instruments, indicating a strong investment in research and development capabilities [8].