UL 1:2012 pdf download.Flexible Metal Conduit.
10.6 A glass, polyethylene, or other chemically nonreactive beaker having a diameter equal to twice the diameter measured over the specimen of partially uncoiled conduit is to be filled with the solution of copper sulphate to a depth of not less than 3 inches (76 mm). The temperature of the solution is to be maintained at 18.3 ±1.1°C (65.0 ±2.0°F).
10.7 One of the selected specimens is to be immersed in the solution and supported on end in the center of the beaker so that not less than half of its axial length is immersed. The specimen is to remain in the solution for 60 seconds, dunng which time it is not to be moved nor is the solution to be stirred.
10.8 At the end of the 60-second period, the specimen Is to be:
a) Removed from the beaker,
b) Rinsed immediately in running tap water,
C) Rubbed with clean cheesecloth (a clean soft-bristle test-tube or bottle bwsh in good
condition and of applicable size may be used to rub the interior surfaces of the specimen of
partially uncoiled conduit, but cheesecloth is to be used on the other surfaces of this specimen and on the unformed strip) until any loosely adhering deposits of copper are removed, and
d) Dried with clean cheesecloth,
The turns of the specimens of partially uncoiled conduit are not to be farther separated during this process. Again, hands and other damaging and contaminating objects and substances are not to touch the surfaces that were immersed, The part of the specimen that was immersed is to be examined, considering each edge and broad surface separately and disregarding the portion of the specimen within 112 inch (13 mm) of its immersed end.
10.7 One of the selected specimens is to be immersed in the solution and supported on end in the center of the beaker so that not less than half of its axial length is immersed. The specimen is to remain in the solution for 60 seconds, dunng which time it is not to be moved nor is the solution to be stirred.
10.8 At the end of the 60-second period, the specimen Is to be:
a) Removed from the beaker,
b) Rinsed immediately in running tap water,
C) Rubbed with clean cheesecloth (a clean soft-bristle test-tube or bottle bwsh in good
condition and of applicable size may be used to rub the interior surfaces of the specimen of
partially uncoiled conduit, but cheesecloth is to be used on the other surfaces of this specimen and on the unformed strip) until any loosely adhering deposits of copper are removed, and
d) Dried with clean cheesecloth,
The turns of the specimens of partially uncoiled conduit are not to be farther separated during this process. Again, hands and other damaging and contaminating objects and substances are not to touch the surfaces that were immersed, The part of the specimen that was immersed is to be examined, considering each edge and broad surface separately and disregarding the portion of the specimen within 112 inch (13 mm) of its immersed end.
