[Inhibition of fading in FITC-labelled coverslip preparations].

The influence of anti-fading-substances on the kinetic of fading FITC-labelled coverslip cultures was tested and a quantitative valuation theses compounds was performed. The half-life fluorescence intensity was detected with 2 different methods. The effect of 21 chemical substances was investigated whereof 7 compounds was determined as effective fading-inhibitors. The velocity constants of the 1st order (kapp) of photochemical reaction increase with rising hydrogen activity.