The outer face of three samples (lenses or samples of material) shall be heated to 50 °C +5 °C and then immersed for five minutes in a mixture maintained at 23 °C +5 °C and composed of 99 parts distilled water
The outer face of three samples (lenses or samples of material) shall be heated to 50 °C +5 °C and then immersed for five minutes in a mixture maintained at 23 °C +5 °C and composed of 99 parts distilled water