electrically heated hydraulic press designed for the purpose the color transparency and appearance of the 3 of 60 active tnz sample was indistinguishable from the lldpe control while the 8 of 60 active mnt had the characteristic good transparency but with a very light tan tint in the thicker part of at the top of the mold after six months the 3 tnz sample showed no aging and was as good as the lldpe control a full study was then undertaken and the resistivity results are shown in table 6 with the lowest of three readings reported for each side of the pressed film table 6______________________________________ resistivity ohm cmpercent tnz surface volume______________________________________controlside 1 1 2 u00d7 10 sup 12 2 2 u00d7 10 sup 17side 2 1 0 u00d7 10 sup 12 1 0 u00d7 10 sup 17 1 0side 1 1 2 u00d7 10 sup 12 1 5 u00d7 10 sup 11side 2 1 2 u00d7 10 sup 12 1 6 u00d7 10 sup 10 2 5side 1 3 7 u00d7 10 sup 11 2 4 u00d7 10 sup 9side 2 5 4 u00d7 10 sup 11 1 2 u00d7 10 sup 9 5 0side 1 8 0 u00d7 10 sup.