When selecting Holmium laser safety goggles for use in Australia it is important to make sure they are fully certified to the relevant laser safety standards. In Australia the wavelength , Optical Density and L ratings are all required to be marked somehwere on the glasses.
More information on the standards can be found via the below link.
You guide to choosing laser safety eyewear (lasersafetyglasses.com.au)
Holmium 2100nm Laser Safety Glasses & Goggle Australia
Typical specifications for Holmium laser safety goggles are shown below:
Wavelength & Optical Densities
1010-1500nm OD 7+
850-5200nm OD 3+
945-2300nm OD 5+
2300-2500nm OD 4+
2800-10600nm OD 5+
L-Ratings
850-900 DIR LB3
>900-950 + >1400-2200 DIR LB4
>950-1000 DIR LB5
>1000-1063 DIR LB6
>1063-1400 D LB6 + IRM LB7Y
2900-3200 + 10600 DI LB4
VLT: 75%