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Product function of whiteness tester

The instrument conforms to GB3978-2008: "Standard lighting body and geometric conditions". Simulated D65 lighting body lighting. d/o illumination is used to observe the geometry, the diameter of the diffused ball is 150mm, the diameter of the test hole is 30mm (or 19mm), and the light absorber is provided to eliminate the influence of the reflected light of the sample mirror. The peak wavelength of the spectral power distribution of the R457 whiteness optical system is 457nm and the half-height width is 44nm. The Y10 optical system conforms to GB/T3979-2008 "Measurement Method of object Color"; Determination of ISO whiteness (R457 Blu-ray whiteness) and Z whiteness (Rz) Determination of fluorescent brightening produced by emission of fluorescent substances (sample contains fluorescent brightening) Measure the whiteness of the powder The opacity OP, light scattering coefficient S, light absorption coefficient A, transparency and ink absorption value were measured Measure the brightness stimulus value Y10, that is, the green light diffuse reflection factor Ry Determination of lead core concentration

Test object and standard description of falling ball impact testing machine

The falling ball impact testing machine is mainly suitable for the steel ball impact strength testing of food packaging hard sheets, solid medicinal hard sheets and plastic bottle caps. During the test, the test product is placed on the test table of the falling ball impact testing machine, so that the specified weight of the steel ball falls freely on the product from the specified fall height, and the impact of the product is carried out, and then the appearance and performance of the product are checked.

How to solve the positive and negative error of electronic tension machine

Electronic tension machine is an important equipment in the study of non-metallic materials mechanics, but there are many types of electronic tension machine, different electronic tension function to meet different measurement needs. But no matter what type of non-metallic tensile testing machine, there will be errors in the measurement, so people will go through many experiments to determine the accurate value.