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1. Personnel signatures: After each experiment, all individuals involved in the experimental research should sign the original records, both the researchers and the person in charge of the experiment. Signatures are required in many places within the original records; it is important to understand the seriousness of signing. All signatures must be made by the respective individuals themselves, and no one else may sign on their behalf. 2. Experimental Methods: The laboratory shall use appropriate methods and procedures for all tests. Laboratories work with products, and different products require different standards as well as different testing methods. For products with clear execution standards, simply select the testing methods specified in those standards. In actual work, we encounter a large number of non-standard products; especially when conducting commissioned inspections, it is necessary to communicate with the client and use methods that meet the client’s requirements and are suitable for the tests to be carried out. When the customer does not specify the method to be used, the laboratory shall select an appropriate testing method from those published in international, regional, or ** industry standards, or those published by renowned technical organizations or relevant scientific books and journals, or those specified by the equipment manufacturers. Testing methods developed or adopted by the laboratory can also be used if they meet the intended purpose and have been validated. 3. Sample information: After receiving the sample, do not rush to conduct testing; first check whether the sample has any defects that could affect proper testing. For some packaged samples where defects cannot be observed directly, if defects are found upon opening the package, the inspection should be terminated immediately, the sample should be handled properly, and the customer should be informed promptly. Even if there are no defects, the sample condition should be appropriately described in the original records. 4. Record modification: The original records shall not be deleted, modified, or have their data altered arbitrarily. If modification is necessary, a diagonal line should be drawn over the modified portion; it must not be completely shaded so that the original record remains readable. The person making the modification should sign their name, indicating the date and reason for the change. 5. Standard solutions: Commonly used standard solutions include titrant solutions, standard pH buffers, standard colorimetric solutions, standard lead solutions, standard arsenic solutions, and so on. When using these standard solutions, the processes of their preparation and calibration must be recorded in the original documentation, or their source must be indicated; furthermore, records of preparation and calibration should be kept in a separate notebook. 6. Usage and receipt registration: During experiments, it is necessary to keep proper records of the usage of instruments, with the original records corresponding to these usage logs. For special reagents (toxic, narcotic, psychotropic, radioactive substances), the receipt records must be matched with the original experiment records. Similarly, the receipt records for reference standards and control herbs should also correspond to the original experiment records. 7. Photos from the experiment: The images and photos taken during the experiment should be attached in the appropriate sections of the original experiment records, while the negative copies or electronic versions should be stored properly. Copies of the experimental records printed on thermal paper must be kept. When taking photos, it is necessary to properly label and record the diagrams; a small piece of paper can be placed next to them while taking the photo, so that the corresponding names and brief information can be captured as well. 8. Writing of records: The original records should be written in neat handwriting using standard characters; pencils and ballpoint pens (except for micrographing) shall not be used for any records. Common foreign language abbreviations (including those for experimental reagents) must comply with the specified rules. When it appears for the first time, annotate it in Chinese. Uncertain quantities (such as 1–2 drops, 5–10 ul) should not be included in the experimental records. Standard professional terminology should be used, measurement units must be specified and international standard units should be employed; the selection of significant figures shall comply with the requirements of the experiment. Selection of significant figures: Rounding principles: Round up, round down, and keep five when it’s five; select significant figures appropriately. The number of significant figures is determined based on the magnitude of the value; for example, if the area of a liquid chromatography peak is in the tens of thousands or hundreds of thousands, simply take the integer part ； When indicating measurement accuracy, the standard deviation should have at most two significant digits. 9. Sample weighing requirements: When determining the content, the weighing of the reference substance must meet the requirements regarding weighing accuracy. A balance with a precision of one in 100,000 should be used for weighing the reference substance, and the amount weighed should be no less than 10 mg. Do not use a balance with a sensitivity of one ten-thousandth; some even measure only 1 or 2 mg, which results in large measurement errors. 10. Originality: Original records should be made while the experiment is being conducted; no retroactive entries or copying of such records is allowed. The original records must include not only the ideal experimental results that are part of the standard text, but also any additional experimental results that were not included in the standard text. 11. Printing of graphs: A graph is a diagram that is generated by software, which captures the electrical signals produced by instruments, converts them into digital signals, and then prints out the resulting graph after analysis and processing. As the functions of the data acquisition and processing software become more advanced, the system records a great deal of information with each sample insertion. Generally, only some of the information we need is selected for printing, but none of the information that is essential must be omitted. The experiment information section includes: collection time, file storage path, printing time, name of the experimental method, operator’s name, injection volume, etc. 12. Experimental conclusions: Before starting each experimental project, it is necessary to first record what the purpose of that experiment is. After the experiment, the results should also be analyzed to draw clear conclusions. 13. Quality control data: Many experiments require quality control data, such as blanks, replicates, spiked samples, standard samples, etc ； For example, the standard requires ash to be used as a parallel sample; two samples should be prepared in parallel to test the consistency of the results obtained from both tests. 14. Subcontracted data: Subcontracting refers to the practice whereby a laboratory, under certain circumstances, entrusts another laboratory to provide it with testing data. The laboratory shall be responsible to the client for the work of subcontractors, except for those subcontractors designated by the client or a statutory authority. For tests carried out by subcontractors, this shall be indicated in the original records; the data provided by the subcontractor shall be archived together with the original records, and it shall be demonstrated in the test report.