1.1 blue black are A, B, C3 by quality circumstance cent grade, among them class A product is classy article, b form product is first-rate product, c form product is tasted for qualification.
1.2Index of function of grade of A, B
The blue black of grade of A, B divides each function index to should accord with QB551-84 outside the regulation, fastness of deepness of colour and lustre, leach, insolation fastness, diffuse degree, intermittence is written, exterior of PH value, ink and the technology of the exterior that pack ask to should accord with a watch 1 regulation. Express 1
Each function index should accord with the blue black of C grade QB551-84 regulation.
2 experiments method and measure
2.1 manage change the experiment of function index
2.1.1 allow to take 5 bottles in draw-out sample, after flipping through 3 times up and down. Open cap, rub-up opening, fall to already used distilled water abluent and in the 500ml sulphur measuring flask of stoving sealed, change what function index checks to use as manage.
2.1.2 manage change method of function index and each experiment to should accord with QB551-84 outside the regulation, right not the test of dissolve content and stability, the amount should be taken after Cheng Youmo the fluctuation of sulphur measuring flask of water flips through 3 times first, undertake detecting again.
2.2 ink exterior and the exterior that pack
2.2.1 ink exterior
Will by unscrew of check inky cap, outside of range estimation ink leaves in the incandescent lamp of 200-250lx intensity of illumination, smell odour with smell.
Previous12 Next