What kind of microscope is good, how to choose a good microscope
Microscopes have become the most common analytical instruments in laboratories and R&D rooms, but for professionals who often use microscopes, how to easily choose a microscope that meets their research needs and is cost-effective is a very headache. In the past, when many users consulted us, they could only be regarded as simple microscope inquiry, but they did not know much about the purchase knowledge of microscopes. To judge the quality of a microscope, as a layman, consumers , it may be more difficult, so how do we judge consumers?
Buying microscope tips 1: Know what type of microscope is suitable for the sample you want to inspect before purchasing?
Microscopes can be divided according to their functions according to different observed samples: generally there are metallographic microscopes, polarized light microscopes, stereo microscopes, biological microscopes, fluorescence microscopes, etc. Different functional microscopes are used differently, such as polarized light microscopes, which are mainly used in the detection of anisotropic non-metallic materials such as geological ores. Metallographic microscopes are mainly used to observe, identify and analyze the internal structure of various opaque materials such as metals. It is suitable for factories and mines, colleges and universities and scientific research departments. The instrument is equipped with a camera device, which can capture metallographic atlas, measure and analyze the atlas, and edit, output, store, and manage images. Stereo microscope is suitable for micron-level effect analysis, fracture detection, inspection of electronic industrial production lines, verification of printed circuit boards, verification of welding defects (printing misalignment, sagging, etc.) in printed circuit components, verification of single-board PC, And all the areas where the surface of the sample is carefully observed, with the measurement software, various data can be measured. Biological microscopes are mainly used in medical and health fields, schools and scientific research units for medical diagnosis, testing, teaching and research. Therefore, before purchasing, you should figure out what kind of sample you want to observe, so that the merchant can recommend a suitable microscope for you.
Buying microscope skills 2. Buy an upright microscope or an inverted microscope?
Metallographic microscope, also known as material microscope, is mainly used to observe the structure of metal structure. It can be divided into upright metallographic microscope and inverted metallographic microscope. The image of the upright metallographic microscope is an upright image during observation, which is related to the user's observation and The identification brings great convenience. In addition to the analysis and identification of metal samples with a height of 20-30mm, it is more widely used in transparent, translucent or opaque materials because it conforms to people's daily habits. Objects larger than 3 microns and smaller than 20 microns, such as cermets, electronic chips, printed circuits, LCD substrates, films, fibers, granular objects, coatings and other surface structures and traces, can have good imaging effects. In addition, the external camera system can be easily connected to the video screen and computer for real-time and static and dynamic image observation, saving and editing, printing combined with various software to meet the needs of more professional metallography, measurement, and interactive teaching. Inverted metallographic microscope uses the method of optical plane imaging to identify and analyze the structure of various metals and alloys. It is an important tool for metallographic research in metal physics. It can be widely used in factories or laboratories for casting quality and raw material inspection. , or the research and analysis of the metallographic structure of the material after processing, so as to provide intuitive analysis results, and it is the key equipment for quality identification and analysis of casting, smelting, and heat treatment in mining, metallurgy, manufacturing, and machining industries. In recent years, the microelectronics industry requires the production of high-magnification planar microchips. Therefore, metallographic microscopes have been introduced into this field for promotion and are constantly being improved to meet the special needs of the industry. Inverted metallographic microscope, since the observation surface of the sample is down and coincides with the surface of the worktable, the observation objective lens is located under the worktable, and the observation is upwards. Beautiful and elegant, the base of the inverted metallographic microscope has a large supporting area, a low center of gravity, is safe, stable and reliable, and the eyepiece and the supporting surface are inclined at 45°C for comfortable observation. In addition to the standard configuration options, the inverted metallographic microscope has a direct image output function through technical improvement, and can be easily connected to a computer to apply software for intelligent processing according to process requirements. Simply put: the upright sample is placed on the bottom, and the inverted sample is placed on the top. The upright objective is down, and the inverted objective is up. That is to say: the inverted lens is under the stage, and the test block is placed on the stage with the test surface facing down. At this time, the lens is down, the test block is upside down, and the lens observes the test surface from bottom to top.
How to buy a microscope 3. What is your budget?
At present, the microscopes on the market are mainly domestic and imported. Generally speaking, the price difference ranges from several times to ten times. You can decide whether to buy domestic or imported microscopes according to your existing budget. However, if your budget is relatively sufficient or there is no fixed budget, it is recommended that you purchase an imported microscope. Of course, the editor does not deny that domestic microscopes have made great progress in recent years, but in terms of optical path design, mechanical stability, etc., domestic microscopes are still far from the quality of imported microscopes, and from the perspective of long-term investment Look, imported microscopes (the editor here refers to microscopes imported from abroad, except those produced by joint ventures) generally have a service life of about 60 years, while domestic or some joint venture brands have poor imaging quality within a few years after purchase. There are various problems such as clarity and instability, so it is better to make a one-time investment than to buy it repeatedly. If you choose a domestic microscope, we will consider LW brand, low-end products: generally infinity, and the objective lens is flat field. Class of products: generally the objective lens is finite and achromatic.
Buying microscope skills Question 4. How is the price of the microscope constituted?
Many purchasers of microscopes have asked us such a question, that is, "How much does a microscope cost?" or "How much does a XXX model microscope cost?" Generally, our answer will be "What configuration do you need?", or if you I just want to have a general understanding of the quotation of microscopes. It is estimated that we will only give a vague price range with a very large price difference. The key reason for such a result is the configuration of the microscope. In fact, buying a microscope is very similar to buying a computer - everything is configured according to your requirements. For example, you need several observation modes (affecting the number of objective lenses), whether you need software, whether you need CCD, etc. These requirements greatly affect the quotation of the microscope. You must know that the most important and most valuable part of the whole microscope is the objective lens. , its number will greatly affect the price of the microscope
