[en] The linearity of response and fading of LiF (TLD-100) rectangular rods were studied in this research. It was found that the response of the LiF was linear. There was no statistically significant difference between the TL response per rad over the whole range of an absorbed dose used from 0.090 to 10.000 rads (centigrays) of Co-60 radiation with 95% confidence limits. The observation on fading was made within 45 days after exposure to 0.302, 1.471 and 3.783 rads. The TLD-100 showed no significant fading with time of storage