Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2006.311.314MostafaEl-Sayed Moenis Azooz 2200662This study deals with the possibility of using a system of glass borates as a former, Na2O and pbO as modifiers doped with Cu++ 0.1 wt.% , 3 wt.% Er2O3 , 3 wt.% H2O3 and 0.2 wt.% H2O3 chromophors in the system, as a standard filter in the visible, Uv and IR regions. In an instrument as complex as a spectrophotometer there are many sources of error. Because of this it is useful to have available standard materials whose spectral transmittance are known accurately. Periodic measurements of such standards provide a useful indication of whether a spectrophotometer is producing accurate results. If the spectral transmittance functions of these standards are chosen suitably, the measurements can provide diagnostic information to indicate what type of error is occurring. The results of the spectral transmittance and optical band gap show that the suggested glass is stable for environmental conditions, so we can consider that system as good as commercial standard.]]>Gibson, K.S. and H.J. Keegan,193828372385Vandenbelt, J.M.,196151802803Robertson, R.,19771977Dodd, C.X. and T.W. West,196151915915Vithal, M., P. Nachimuthu and R. Jagannathan,19952 , PbO B TeO2 glass systems.]]>8323323Arun, K.V.,1994Vogel, W.,19852nd Edn.,pp: 156pp: 156Weyl, W.A.,195135421421