With the advancement of the inspection system reform, the inspection data has been accepted and recognized by all sectors of society. Judging from the national cotton purchasing and storage policy in 2008, the instrumental testing data of the new system cotton is the only basis for the state to store and store cotton. The accuracy of the test results is related to the interests of both parties. Combined with the actual work, it is believed that the accuracy of the notarization test should be improved from the following aspects. The sample is real and effective The authenticity and accuracy of the sample is the premise of accurate public inspection results. If the sample is not accurate, the test result must be inaccurate. The "Cotton Quality Inspection System Reform Plan" stipulates that the inspection samples are taken by the processing enterprise. During the processing of the cotton into a package, the automatic sampling device cuts a length of 260 mm, a width of 124 mm, and a weight of 125 g, and is involved in the barcode. Since the inspection sample is sampled by the processing factory itself, the sampling of the inspection sample will inevitably be distorted by the sampler's responsibility and human factors. Therefore, in order to ensure the authenticity of the sample, the laboratory should check the quantity and quality when the sample is handed over to the processing plant. The problem should be promptly rectified by the enterprise to ensure that the sample is true and effective. The grading room simulates accurate and stable glare At present, the sensory test is carried out in a simulated grading room, which is not affected by weather conditions and geographical location. Because the inspectors should comprehensively assess the grade of cotton according to the color of the cotton, the quality of the rolling mill and the maturity procedure (coming soon to transition to color grade), the sensory inspection is greatly affected by the laboratory lighting. If the lighting does not meet the requirements, then the inspection will be affected. The accuracy of the results requires that the simulation conditions of the simulated grading room should meet the simulated daylight conditions required by GB/T13786, the illuminance reaches (750±100) 1X; the color temperature reaches (7500±200)K, and the color rendering index is not less than 92. The illuminance of the work area can be recorded by regularly cleaning the luminaire and using a calibrated illuminometer to ensure that the grading room simulates accurate and stable glare. Strictly control the working environment of constant temperature and humidity laboratory The environment of the constant temperature and humidity laboratory should be maintained at: temperature (20 ± 2), humidity (65 ± 3)%, and the MDF Bureau monitors and collects data through the wet humidity probe. In the actual inspection work, the laboratory environment is easily affected by the outside world, which requires the inspectors to close and close the door, and minimize the number of access. The temperature and humidity probe should also be regularly checked to ensure that the temperature and humidity environment of the laboratory is controlled within the effective range. At the same time, 1-2 qualified temperature and humidity probes should be reserved to deal with emergencies. The moisture regain rate of the sample to be tested meets the requirements After the sensory test of the cotton test sample is completed, the moisture regain test is performed on the test sample before entering the sample balance room. If the moisture regain rate of the sample exceeds 6.5%, the sample should be pre-baked and then the moisture absorption balance should be performed. . The sample was equilibrated at standard atmospheric pressure for at least 24 hours, and the equilibrium moisture regain of the sample reached between 6.5% and 8.5% before the HVI test. Strictly calibrate cotton sample management, standard use In order to ensure the accuracy of the test results, the cotton bulk test equipment should be calibrated and checked before the test. The calibration cotton sample is the only substance that determines the accuracy of the instrument, which requires us to strictly calibrate the cotton school management and regulate the use. It should be noted that: first, the calibration cotton sample must be balanced for 48 hours under the standard humidity and humidity; second, each cotton sample has a unique mark, which is placed in the inspection place in order, and only one sample is used at a time. After the timely return, the same HVI long-strength calibration cotton sample should not be used continuously. After use, put the sample back to the storage position and mix it with the remaining samples. The same cotton test should be discarded after 15 combs. The fourth is to calibrate the cotton sample. Stored in a fireproof, ventilated, moisture-proof, mildew-proof room, the storage environment is normal temperature, and the relative temperature is not 70%. HVI operator manual specification Whether the inspector's operation method is standardized and correct directly affects the accuracy and accuracy of the test data. Different operating methods can test different test data. Different calibration methods will leave different correction factors for the instrument during calibration. Only the closest operation method to the calibration can be used to obtain the closest true value of the sample. First, the sample should be light when it is broken, otherwise the fiber will be straightened and the length value will be too long. Second, the sample should not be too heavy. The time in the hand should be as short as possible. Because the method is too heavy, the time will affect the sample. The temperature and humidity have a great influence on the test results. The third is to put the sample carefully and evenly to avoid the difference in test results. Regular maintenance of equipment and equipment Whether the HVI equipment can operate normally is directly related to the timely and accurate detection data. Due to the large dust in the cotton detection environment, it should be done in daily maintenance: First, the HVI should be cleaned for 2 hours (200 samples). The box can effectively avoid the low vacuum, the blockage of the vacuum line bell mouth, the cotton blockage measurement port and other faults. Second, the dust and dust inside and outside the HVI instrument should be thoroughly cleaned during each shift, and the inside of the chassis should be cleaned with a vacuum cleaner. When cleaning the circuit board, keep the vacuum cleaner away from the original circuit as much as possible to avoid damage to the circuit board caused by improper operation or excessive suction. The third is daily maintenance, daily inspection for the presence of worn parts; whether there is a set of flowers in the upper and lower cork of the micronaire cavity, check the airflow calibration plug "O" ring for leaks, software operation is correct, etc. Clean all parts that can be cleaned. The fourth is to do a good job in the maintenance of auxiliary equipment, timely clean up the air compressor sewage and air conditioning machine humidification scale, regularly clean the air compressor oil radiator, condenser and air filter, replace the air conditioner outdoor unit condensate. In the work, regular cleaning and maintenance are used to ensure the normal operation of the equipment. Timely review and analysis of data The person in charge of the laboratory technology pays close attention to each inspection data, timely processes the abnormal data, and organizes relevant personnel to analyze the sampling results and actively take measures to improve the quality of inspection work. In summary, the accuracy of cotton inspection results is improved from eight aspects. Only by solidly and effectively improving the quality of inspection and improving the accuracy of inspection results can we establish the credibility and authority of notarization inspection. References: HVI Large Capacity Cotton Fiber Tester Calibration Specification (HVI1000) We are a premium grow light manufacturer with 12 years of experience, with mature and rich product line, and a variety of lamps to choose from. OEM ODM also welcomed. We are committed to providing a complete and cost-effective led hydroponic lights solution that meets the needs of our customers. Our experienced professionals work diligently to ensure that our customers receive the best led grow light products and services available. Spider Led Grow Lights,6500K Led Grow Light,Mars Led Grow Lights,Led Hydroponic Lights GuangDong One World High-tech Co., Ltd. , https://www.maksdep.com