A desktop diffractometer, particularly a benchtop X-ray diffractometer, is a high-precision scientific instrument. Its maintenance and care are crucial for ensuring stable operation and extending its service life. The following are recommendations for the maintenance and care of desktop diffractometers:

I. Daily Maintenance

• Operating Environment Management

 Ensure the instrument is placed in a dust-free environment with a constant temperature (recommended temperature between 15°C and 25°C, with temperature variation less than 1°C), moisture protection (relative humidity maintained between 20% and 80%), vibration isolation, and protection from corrosive substances.

 Maintain cleanliness around the instrument to prevent dust and dirt accumulation. Also, ensure proper laboratory ventilation and cleanliness.

•  Sample Handling

 Samples must be prepared and processed according to the requirements of the X-ray diffractometer user manual, ensuring no impurities or interfering substances that could affect the experiment.

 After each test, promptly recover the sample and clean the sample holder using an appropriate solvent (e.g., anhydrous ethanol) to prevent contamination and corrosion.

Sample holders (e.g., glassware) are fragile; handle with care to avoid breakage, and clean them promptly after use.

•  Instrument Inspection

Before use, inspect the instrument to ensure it is in normal condition. Verify its integrity, especially checking for loose connections, cracks, etc.

 Regularly inspect key components such as the sample holder, detector, oscilloscope, and X-ray tube to ensure they are in good working order.

 II. Periodic Maintenance

•  Cleaning

 Perform a thorough cleaning of the diffractometer regularly, including easily contaminated areas such as the sample stage and detector window.

 Use a soft cloth and appropriate cleaning agents for cleaning; avoid using hard objects or corrosive cleaning agents.

•  Calibration

Calibrate the diffractometer regularly to ensure the accuracy of measurement results.

 Calibration should be performed by qualified professionals following the instrument's calibration procedures.

•  X-Ray Tube Maintenance

 The X-ray tube is a core component of the diffractometer and requires regular cleaning and inspection.

 Check the X-ray tube's insulation resistance value, vacuum level, and consumables; replace them when necessary.

•  Software Updates and Maintenance

 Regularly check for and update the diffractometer's control software to ensure compatibility and functionality.

 Software updates should be performed by qualified professionals following the instrument's software update procedures.

 III. Other Considerations

•  Correct Operation

 Operators should be trained and familiar with the diffractometer's operating instructions to avoid damage caused by improper operation.

 During experiments, closely monitor the instrument's response and make adjustments as necessary.

•  Timely Repairs

 If the diffractometer malfunctions or exhibits abnormal behavior, promptly contact qualified personnel for repair.

 Disconnect the instrument's power supply before repairs and follow the instrument's repair procedures.

•  Recording and Tracking

 Establish a record-keeping system for instrument maintenance and care, documenting the time, content, and results of each maintenance activity.

Through recording and tracking, potential instrument issues can be identified promptly, and appropriate measures can be taken.

The maintenance and care of a desktop diffractometer require comprehensive consideration of multiple aspects, including daily maintenance, periodic maintenance, correct operation, timely repairs, and recording and tracking. Only by performing these tasks thoroughly and meticulously can the stable operation of the diffractometer be ensured and its service life extended.