"Serial" paint inspectors, I would like to say to you (3) - "fine" to operate, reading has "degree", how can do a good job of coating "fineness" test?

daily inspection, GB/T1724-1979 and GB/T6753.1-2007 are the two most commonly used fine test method standardsIn principle, no matter which standard, it is necessary to find the fine plate where the particles began to appear denselylet us follow the test step, first comb the process:environment: indoor, dust-free, windless, good light, do not require constant temperature and humidity, room temperature can betest bench: flat, clean and fit in heightsample: stir evenly, avoid large amounts of air bubbles, sort out whether the test object is the main agent or after mixingfine plate: flat, dust-free, stain-free, remember to select the fine plate modelscraper operation: the top of the appropriate amount of samples, smooth knife, press plate surface, uniform speed from top to bottom scraping to their ownreadings: The dual hand-held plate is tilted slightly downward, deep in the left shallow to the right, and finds the starting point for the grain-intensive appearancesome places in the test, we need special attention:bubbles: paint mixing, mixing should minimize the production of bubbles, the sample should be kept in place for a period of time before the test, to avoid scraping after the bubble, particles silly confusionscrape plate: operation to be stable, fast, pressing the plate surface, at least at the speed of the "0" tick mark, do not stop at halfwayreading: Don't expect to read the results at onceDue to solvent volatilization and other reasons, the standard reading time is very short, we first need to judge the fine plate according to the condition of the plate is appropriate, and then determine the approximate reading range, and finally in the heart of a number of cases to scrape several times to determine the readingDon't focus on counting "3", "5 to 10" from the start, and it's not too late to finalize the upper limit position of the stripstandard: select the fine plate in strict accordance with the range specified in the standard, and report the results in strict accordance with the reading accuracy of the fine plateThe use of ISO fine plates can not report such results as 35 mwhether it's a new little white freshman who has just stepped into the lab, or an old driver who has stuck to the test bench for decades, the "fineness" test must be a hard mountain for paint inspectorsYou don't know what kind of paint products you will encounter, you don't know what kind of state it will present on the fine plate, you will even be overwhelmed and uncertain when faced with a lot of varnish productsBut what I want to tell you is that you'll have confidence in the results you'll have by doing every step of the way, accurately reading against the standardpaint tester, I would like to say to you (4) - about the corrosion test coating scratch operation, do you understand?relevant wonderful article (click on the title to read)"serial" paint detector, I would like to say to you (1) - from the experimental auxiliary staff W wipe window sill caused by the feeling"serial" paint testing personnel, I would like to say to you (2) - non-volatile content determination, you did the right thing?