The main work of the laboratory includes sample collection and processing, chemical analysis, physical testing, microbiological testing, quality assurance and control, data recording and processing.
I. Sample collection and processing:
The sample collection work of the laboratory needs to follow strict operating procedures to ensure the representativeness and accuracy of the sample. The samples collected should be representative and reflect the overall situation.
The collected samples need to be processed, such as crushing, mixing, drying and other operations, so as to facilitate the subsequent laboratory analysis. The original characteristics of the sample should be maintained during processing to avoid contamination or damage to the sample.
Two, chemical analysis:
Chemical analysis in the laboratory involves a variety of experimental methods, including titration, gravimetric method, spectroscopy, chromatography and so on. Each method has its own specific scope of application and precautions.
When performing chemical analyses, lab technicians need to be proficient in a variety of analytical methods and experimental techniques. They need to operate the laboratory equipment accurately, read and analyze data accurately, and produce reliable experimental results.
Three, physical tests:
Physical tests are an important part of the work of the laboratory, involving tests such as density, hardness, melting point, boiling point, refractive index, electrical conductivity and so on. These tests can help to understand the physical properties of a substance and then infer its chemical properties and areas of application.
When performing physical tests, chemists need to use a variety of sophisticated testing instruments and equipment. They need to operate this equipment accurately to ensure the accuracy and reliability of the test results.
Four, microbiological testing:
Microbiological testing is an important part of the laboratory's work in the fields of food, pharmaceuticals and medical devices. Laboratory technicians need to count and control bacteria, molds, yeasts, etc. to ensure product health and safety and quality control.
Microbiological testing requires strict sanitary conditions and aseptic procedures. Laboratory technicians need to keep the laboratory clean and sterilized to avoid cross-contamination and experimental errors. At the same time, they need to participate in regular training and assessment to continuously improve their testing skills and knowledge.
V. Quality assurance and control:
The quality assurance and control system of the laboratory is to ensure the accuracy and reliability of the test results of an important guarantee. This includes regular calibration of instruments and equipment, validation of laboratory methods, training and assessment of laboratory personnel.
The laboratory should develop a perfect quality control plan, the assay process for strict quality control. At the same time, the laboratory staff also need to continuously learn and update the quality control methods and techniques to improve the accuracy and reliability of the test results.
Sixth, data recording and processing:
All the data generated in the assay process need to be accurately and completely recorded. These data are an important basis for experimental results, but also the cornerstone of subsequent data analysis and processing.
The laboratory technician needs to use a special log book or spreadsheet to record the data with details of the experimental conditions, sample information and so on. Recorded data should be clear, neat, and easy to recognize and trace. When processing and analyzing the data, appropriate statistical methods and techniques should be used to ensure the accuracy and reliability of the data.