Fading of a Single Colorant in Three Different Scenarios

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Select the colorant from the drop-down list and provide an estimate for the prior fade. Enter the parameters for the light exposure scenarios and then click the Compute Fading button. Use the sliders to see the effects of less than 100% of the planned exposures.

Colorant selection

Colorant:

Current colour remaining:
(fraction of the colour that appears to be remaining from prior damage)

Exposure that caused the prior fade was 0 Mlx h (no UV present), or 0 Mlx h (with UV present).

Future Exposure for Scenario 1

Light Intensity (Lux):

Exposure per day:

Flash Exposure:

Flashes per day:

Days per year:

Years:

Future Exposure for Scenario 2

Light Intensity (Lux):

Exposure per day:

Flash Exposure:

Flashes per day:

Days per year:

Years:

Future Exposure for Scenario 3

Light Intensity (Lux):

Exposure per day:

Flash Exposure:

Flashes per day:

Days per year:

Year:

(required when any of the above options are changed)

Slider exposure control (0 to 100% of the above settings)
Scenario	Exposure at final time
1	% Mlx h	43.80 Mlx h
2	% Mlx h	43.80 Mlx h
3	% Mlx h	43.80 Mlx h

Calculated colour change
Original colour (estimate) Current colour (estimate) Predicted damage by light with all UV removed Predicted damage by light with UV (equivalent to daylight through glass) Colour change, ΔE₇₆ (from original) 0.0 Colour change, ΔE₇₆ (from current) -

Legal Disclaimer

The Light Damage Calculator was designed by the Canadian Conservation Institute as a tool to help museum staff estimate the effects of lighting on the fading of collections or individual objects under various lighting regimes.

The Light Damage Calculator was designed for convenience and should only be used as a reference tool. The Canadian Conservation Institute makes no representation about the accuracy, reliability, completeness of the calculator or the results to be obtained from its use. All information obtained are without any warranty of any kind. The Canadian Conservation Institute disclaims all express, implied and statutory warranties in accordance with the lighting regimes calculated by this calculator, neither assumes any responsibility with respect to any particular results of the fading of objects or collections nor how the results are applied to actual situations.