Coloring pigment in plastics Testing Methods (1) test equipment two-roll mill roll revolution: 25 rev / min fertilizer colorants, speed ratio 1: 1.2 chrome plated roll. Platen press can be heated and cooled. Two stainless steel mirror panels, inner frame: square-frame, sheet thickness 0.5mm. (2) Test material made of polyvinyl chloride resin, a plasticizer, a stabilizer, titanium dioxide, pigment. (3) Test Method would roll surface temperature is controlled at 160 ℃, PVC sheet thickness 0.4mm; refining plastic time: 7 to 8 minutes the film; tabletting: at a temperature of 165 ℃ ~ 170 ℃ tablet dwell time of 1 minute rapid cooling. (4) colorimetric measurement standard color value, calculated K / S value, color strength test and it can be the difference between the two standard sample coloring power comparison, when adjusted to both have the same coloring. Testing may also be a high-density polyethylene fertilizer colorant manufacturers, low-density polyethylene excellent quality fertilizer colorants, and polypropylene. According to reports, if the bird eating 0.3 ~ 1.0mg colorant pigment fertilizer company every day, about 30% to 45% can be deposited in the egg yolk, if pigment intake increased to 5mg or higher, only 15% to 20% can be deposited in the egg yolk. Crustacean by ingestion green plants, the plant carotenoids converted to shrimp fertility hormone and canthaxanthin deposition in the body. By eating a lot of fish, crustaceans and plankton, so that the meat was fresh color. After the goldfish and shrimp, etc. can alter the absorption of the pigment composition, such as the lutein into astaxanthin, and then deposited in body tissues. Fertilizer colorants high-volume, Weifang Fuyuan (online consultation), fertilizer colorants provided by Environmental Science and Technology Co., Ltd. Weifang Fuyuan. Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) Shandong Weifang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. In Weifang Fuyuan leadership with the staff warmly welcome all inquiries negotiations to create Weifang Fuyuan better future.