Clean, lint-free cloths and isopropanol in a spray bottle - either straight or mixed at anything up to maybe 70/30 with water will do.
Spray screen and wipe with cloth; note that while not detectable to the touch, some areas require a reasonable buffing to remove stuff present on the surface that manifests as obviously "different" to other areas.
If there's a lot of dust you may wish to vacuum or dry-brush first to remove this.
Equally if the glass is heavily soiled keep using clean cloths and more IPA until it looks clean.
Finally once everything has flashed off / dried give it a good buff with a clean, dry cloth - this is the secret to getting the smears out.
I use this on all large bits of glass and it's faultless; the only thing I'd add is that on exterior glass it's washed with warm soapy water first to remove airbourne grit / anything large.
Spray screen and wipe with cloth; note that while not detectable to the touch, some areas require a reasonable buffing to remove stuff present on the surface that manifests as obviously "different" to other areas.
If there's a lot of dust you may wish to vacuum or dry-brush first to remove this.
Equally if the glass is heavily soiled keep using clean cloths and more IPA until it looks clean.
Finally once everything has flashed off / dried give it a good buff with a clean, dry cloth - this is the secret to getting the smears out.
I use this on all large bits of glass and it's faultless; the only thing I'd add is that on exterior glass it's washed with warm soapy water first to remove airbourne grit / anything large.