Micro fading tester

Micro fading testerAlso known as Micro Fading Tester (MFT), it can measure the time behavior of dyes under irradiation. The micro fading test can test almost all types of materials in museum collections, especially suitable for studying faded items (paper works - manuscripts, prints, watercolor paintings, canvas paintings, textiles). Some categories of objects cannot be tested using MFT methods, or their testing is difficult to perform or interpret the results obtained - objects with very high photostability and objects that interact with light in an atypical manner (high reflectivity or transparency). MFT instruments can be considered portable and therefore can be moved to the location of objects within museums, which is particularly important in the case of large artifacts (such as murals, sculptures, maps) or items of significant value

Micro fading testerMFT can measure the time behavior of dyes under irradiation.

MFT testing allows ranking of objects in a set based on their sensitivity to light.

This method allows for the adoption of exhibition strategies for the actual data obtained for each test object, rather than using general assumptions that may be overly conservative, unnecessarily limiting audience access to the object, or overly optimistic and leading to irreversible light induced damage.

This scientific grade instrument is equipped with up to 6 ultra precision LEDs on an electric bracket. Samples can be photoaged using UV, Vis, or NIR LED light sources, and color changes can be evaluated using white LED.

Some users choose several white LEDs with different color temperatures so that they can match them with the LEDs used in the gallery.

The most important feature of the instrument

光斑直径： 0.5 mm

Spectral range: 400-750 nm

Spectral resolution: 2.50 nm

Vertical motion range: -80 to 200 millimeters

Light source: up to 6 electric LEDs

Focus Search: Automatic

Maximum light intensity during focusing: approximately 4 mW (depending on the selected LED)

PC connection: USB 2.0

Size: 250 x 400 x 440 millimeters (width x length x height)

Dimensions when folded: 440 x 400 x 80 millimeters (width x length x height)

Mass: 5 kg

The most important function of software

Control instruments: maximum light output, dark light intensity for positioning, autofocus speed, etc.

You can choose to record a series of reflectance spectra

Automatically end the test based on user selected criteria: time, dosage, or color change

One click calibration of background and white standard

Fast and high-precision autofocus

3 pre selected light intensity values for rapid operation

%Reflectance reading available

The fading of the sample can be compared with the user generated Blue Wool standard or other sample curves

According to the CIE76 and CIE2000 standards, access the colorimetric values of color differences Δ E76 and Δ E2000 in real-time

Color changes displayed on the screen

Automatically generate a report of faded samples through a button

Automatic radiometric and photometric calibration of light sources using optical power and intensity detectors

Operation:

MFT allows non-destructive measurement of color changes under illumination:

(1) The diameter of the light spot on the sample is only 0.5 mm,

(2) Continuously monitor the total color change (∆ E) of the selected points during the measurement process, and when ∆ E reaches the selected threshold (i.e., below the level of significant difference), the operation/or instrument software can stop the test. In practice, for non glossy objects, fading marks will never be seen unless fading is performed to achieve a ∆ E value (>15).

The large-sized fading tester is ready to work in a vertical position.

The instrument is equipped with a standard tripod stand. It allows the instrument to be installed in a vertical position to inspect large objects that cannot be transported (walls, murals, sculptures, etc.).