Quantitative test for residual rosin on cleaned circuit boards

Details Quantitative test for residual rosin on cleaned circuit boards Quantitative test for residual rosin on cleaned circuit boards

1983-10-24

1985-07-23

Miller, Edward A.

Optics: measuring and testing

With sample preparation

356237, 2524081, 436 85, 436 1, C09K 300, G01N 2132, G01N 100

Patent

active

045306010

ABSTRACT:
A procedure is described whereby it can be determined to what extent the non-ionic constituents of a rosin flux, employed during soldering operations in the manufacture of electronic circuit boards, have been removed following the flux removal step. The procedure also permits conductivity readings to be made on the test solution to determine the extent of residual ionic constituents on such boards.

REFERENCES:
patent: 3766639 (1973-10-01), Parr
patent: 3957531 (1976-05-01), Tipping
patent: 4023984 (1977-05-01), Clementson
patent: 4052328 (1977-10-01), Figiel
patent: 4062794 (1977-12-01), Figiel
patent: 4070299 (1978-01-01), Reusser

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