The laser safety filter Type T1P01is a brown absorbing mineral glass filter without additional coating. The protection is based on absorption of the laser light within the bulk material. The filter Type T1P01 has got limited daylight transmission of approx. 7% which is sufficient in bright working environment. Colour recognition is limited. The filter type T1P01 is certiofied with M-protection levels and therfore especially suitable for ultra-short pulse lasers. The laser protection filter is especially suitable for Uv to 532 nm plus IR lasers starting from 750nm up to 1100nm. So it is perfect eg for Ti:Sa plus pump wavelength at 532 nm. Please calculate required protection levels before using laser safety filters and compare with the filter provided.