alpha 711 ra rosin flux

Richey, et al. Any conventional UV-visible monitor capable of measuring the requisite absorbance may be used. In the present invention, absorption spectroscopy, particularly in the ultraviolet UV and visible regions, is the basis for the quantitative analysis of the organic contaminants present on the surface of ECA's. An air pressure of psi was used for the circulation pump. In a second embodiment, the compositions are useful in cleaning various surfaces which are utilized in electronic printing of circuit boards, particularly screen process printing and photomechanical methods.

4920 4921 4922 4923 4924