Iron oxide red color test techniques and detailed test methods
Date:
2024-04-15 09:29:42
At present, iron oxide red is mainly divided into two categories, one is the color comparison method, that is, with the reference sample visual or instrument test to give the results; the other is the direct color measurement method, that is, the use of instruments or visual directly give the color of the value or sample number. According to these test methods, we can know whether the color value of iron oxide red is in line with the national standard culture for production, which provides an important reference basis for purchasing iron oxide red or judging the quality of iron oxide red.
At present, the iron oxide red color test is mainly tested by the iron oxide red pigment color, which is mainly divided into two categories.
Color test method (direct color measurement method) has visual and instrument test two methods:
Class I: Visual method
China has not yet developed national standards. There are ASTMD1535-95a foreign standards, the use of Munsell color label to represent the pigment color. The sample slurry preparation method is not provided in the method,
Refer to other ASTM standard post-pulping tests.
Class II: instrument testing method
The amount of pigment color was measured directly using the instrument. In line with this kind of method of instrument has the color meter, the color matching instrument, the color difference meter and so on.
For the determination of pigment color (dry powder and color paste), see Section IV bis-Whiteness for cake and film making methods.
At present, iron oxide red is mainly divided into two categories, one is the color comparison method, that is, with the reference sample visual or instrument test to give the results; the other is the direct color measurement method, that is, the use of instruments or visual directly give the color of the value or sample number. According to these test methods, we can know whether the color value of iron oxide red is in line with the national standard culture for production, which provides an important reference basis for purchasing iron oxide red or judging the quality of iron oxide red.
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