Description

1. INTRODUCTION:
1). Make measurement of colour and colour difference reflected by materials.
2). Make measurement of ISO brightness (Blue Whiteness R**7) and degree of whiteness for Fluorescent whitener.
3). Make measurement of CIE whiteness (Ganz whiteness W*0 and Color cast value Tw*0) Make measurement of whiteness of building materials and non-metallic minerals.
4). Make measurement of Hunter system Lab and Hunter (Lab) whiteness reflectance factor.
5). Make measurement of yellowness.
6). Make measurement of opacity, transparency, light scattering coefficient and light absorbing coefficient.
7). Make measurement of ink absorption.
2. APPLICATIONS:
Paper, Board, Pulps, Chemical fiber, Textile, Plastic, Ceramic, Enamel, Fecula, Salt, White cerement, Porcelain clay and French chalk  etc
3. STANDARDS:
 ISO ***9, ISO ***0, ISO ***1
4. SPECIFICATIONS:
1). Repeatability of test: δ(Y*0)< 0.1, δ(X*0, Y*0)< 0.**1
2). Accuracy:  ?Y*0< 1.0,?x*0(Y*0)< 0.*1
3). Sample size: Diameter of the testing plane should be larger than *0mm while the thickness larger than *0mm.
4). Power supply: **0~**0V, *0Hz, 0.3A
5. FEATURES:
1). Simulate D*5 illuminator to illuminate. Adopt CIE ***4 supplementary standard colorimetric system and CIE ***6(L*a*b) colour space and colour difference formula.
2).  Adopt d/o illuminating*-geometrical viewing conditions. Diameter of the globe of diffusion is **0mm and diameter of the testing hole is *5mm. Light absorber is provide to eliminate the effect of mirror reflection.