Footnotes [Lutz 128(7)]

a The Heliotemperatura temperature control device is manufactured by HelioScreen Labs.

b The Helioplate HD6 PMMA plates are manufactured by HelioScreen Labs.

c The Altisurf 500 lab workstation is manufactured by Altimet.

d The Labsphere UV-2000S transmittance analyzer is manufactured by Labsphere Inc.

e Ultraviolet Transmittance Analyzer Performance Validation Standards are distributed by Labsphere Inc.

f Helioplate HD0 PMMA plates are manufactured by HelioScreen Labs.