How often should I replace my Pro-line HR96 reflector?

Miro Aluminum reflectors don't oxidize but they get dirty by dust and deposits that are almost impossible to remove without damaging the reflective material. Calcium deposits (from damp and water), pesticides and sulphur are common deposits. Depending on how clean you work we recommend to change the reflectors once every 1 to 2 years. That can save you up to 10 % reflected light.