Urinalysis test strips refer to test strips that test for bilirubin, urobilinogen, ketone bodies, ascorbic acid, glucose, protein (albumin), blood cells, PH, etc. in urine. Urine Reagent Strips,Urine Test Strip,Urine Sugar Strip Test,Visual Urine Analysis Strips Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
Detection principle
1. pH: The pH value in the range of 5-9 is measured by the pH indicator, and the pH value of the fresh urine of a normal person is between 5-7.
2. Nitrite: The reaction is based on the reduction of nitrate to nitrite by Gram-positive bacteria in the urine. The nitrite reacts with p-aminobenzenesulfonic acid to form diazonium compounds, which are then combined with N-(1-naphthalene) )-3 aminopropanesulfonate combined with a pink color.
3. Glucose: According to the reaction principle of glucose oxidase, glucose oxidase specifically oxidizes glucose to generate glucuronic acid and hydrogen peroxide. Under the action of hydrogen peroxide, hydrogen peroxide oxidizes the indicator and turns color. .
Classification
Urinalysis test strips are divided into visual series and machine series. The visual inspection series is divided into several models according to different inspection items; the machine inspection series is divided into several models according to different applicable instruments.
1. Classification by measurement method
1) Visual inspection series
When observing the result, compare the color with the standard color code within the time specified on the color code, judge and read the result.
2) Machine test series.
For instrument operation, refer to the instruction manual of the Urine Analyzer used.
2. According to the number of measurement items
There are single-item, 2-item, 4-item and multiple test strips. Currently, 10-item or 11-item multiple test strips are most commonly used in hospitals.
3. Classification by structure
Urinalysis test strips with single-layer membrane structure and multi-layer membrane structure.
How to maintain and maintain laboratory equipment?
A general biological laboratory should have the following equipment: 1. Stereo and planar high power microscopes, 2. Various Scorpio, 3. Various centrifuges, 4. Spectrometer 5. A variety of oscillators (Shakers and Vibrators), 6. Air filter (ultra clean bench), 7. Hazardous materials console, 8. Constant temperature incubator, 9. Ordinary refrigerator, 10. Ultra-low temperature freezer, 11. Ice machine, 12. Dishwashing machine, 13. pH tester, 14. Disinfect the high pressure boiler. Some advanced laboratories should also have precision equipment such as electron microscopes.
In general, advanced precision equipment must be managed by someone. Advanced precision equipment such as electron microscopes must generally be managed by a dedicated person. The use of an electron microscope requires a range of expertise, especially the preparation and production of the sample is a fairly complex procedure. The routine maintenance and maintenance of effective laboratory equipment can extend the service life and efficiency of laboratory equipment. In addition, Laibei will briefly introduce the routine maintenance and maintenance of laboratory equipment, and hope to bring you Little help.
The general equipment is maintained by the scientists themselves. Commonly used equipment such as stereo and planar high power microscopes, scorpio, centrifuges, spectrometers, oscillating machines, constant temperature incubators, refrigerators, pH testers, warewashing machines, and sterilized high-pressure boilers should generally be used by researchers. I am responsible for maintenance. It is the responsibility of the researcher to keep them clean and tidy, to check their parameters frequently, and to re-adjust their parameters if necessary. When there are obvious problems with some instruments, immediately inform the responsible person to find ways to fix their functions, or contact the seller directly, and ask the seller to immediately send experts to repair their functions.
Lebe reminds you that some special equipment must be regularly maintained. Special equipment such as ultra-clean work stations and toxic substance stations generally require regular maintenance procedures because the national labor protection department also requires this. These two instruments generally need to be inspected every 6 months. The main purpose of the inspection is to detect parameters such as the ventilation flow of the instrument. If necessary, replace the filter membrane of the clean bench to ensure that the air passing through the clean bench is pure.
Good maintenance practices can extend the life of the instrument. A good maintenance habit can effectively extend the service life of the equipment. Therefore, we should take a long-term view and develop a good habit. Always keep the equipment clean and tidy, check regularly, and do not wait until regular maintenance. There is a problem and then repair.
Normal instrumentation is a guarantee for improving the efficiency of scientific research. If some instruments and equipment often have problems, it will inevitably cause serious interference to our research work. Although regular maintenance costs a lot of money, it is still cost-effective. Therefore, it is necessary to keep the various instruments and equipment in the laboratory in normal working condition. Only in this way can we ensure the high efficiency of scientific research work.
In summary, the maintenance of laboratory equipment is directly related to the efficiency of scientific research and the service life of the equipment itself. A good maintenance habit can effectively extend the life of the equipment and improve the efficiency of research. Lebe has divided maintenance into three levels: 1. Advanced precision instruments and equipment should be handled by professionals, 2. The routine maintenance of general equipment and equipment is the responsibility of the researchers themselves. The relevant equipment and equipment are responsible for the maintenance items.