Test methods (1) Determination of readily dispersible pigment test method: press pigment in plastic coloring Determination to take dilute PVC sheet in half, the roller surface temperature is controlled to 130 ℃, PVC sheet thickness 0.3mm, plastic mixing time 7 to 8 minutes of the film. Tabletting temperature 165 ~ 170 ℃; the tablet dwell time of 1 minute speed cold. Assessment: The following two different shear mixing conditions improve color strength calculated dispersion. The best of which five pesticide colorant, a worst. Colorants maximum absorption wavelength determines its color, and the ability to absorb the maximum absorption at a wavelength determines its coloring power. But coloring not only its chemical structure, but also on the pigment easy to disperse about sex. The better the pigment easy to disperse pesticide colorant product, the higher the coloring strength. (4) The color strength and color has its significance. Such as the need dubbed dark tones should choose high color strength varieties (organic pigment) good quality colorants Which pesticides, when needed dubbed light colors when selecting varieties of low tinting strength (inorganic pigments). Get a paint color when missing or when the price is more expensive, the choice of other colors instead of the same color, but color strength of two different shades of the same formulated different requirements in place at the time. Which is good reputation pesticide colorants, pesticides colorants, Weifang Weifang Fuyuan Fuyuan provided by the Environmental Protection Technology Co., Ltd. Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) strong, credible, Shandong Weifang other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Weifang Fuyuan into the brilliant and you work for a better future!