Temp in UV Chamber: 52.0 degrees centigrade maximal =

125.6 degrees Fahrenheit maximal

Humidity in UV chamber: 20 % average

Light source: 4 tubular 9 watt bulbs for a total of 36 watts.

UV wavelength of light sources: 365nM

Photos distance from light sources: 3 inches/7.5 centimeters or less - bulbs are above and to the sides of photos.

UV intensity at photos: Approximately 11,040 uWatts/cm2 or more (this is a calculated value, not measured directly and taken from a known table of intensity, wavelength and distance) - there are bulbs above and to the sides of photos. There are reflectors above, to the sides of and below photos.

Photo used: The exact same photo as used the original inkfarm test. A multicolored abstract photo.

Time of exposure: 0 time

1 month

2 months at the time of this reporting

Both control photos are upside down and not exposed to UV light sources but at same temperature and humidity as test photos.

Test photos are exposed to UV light sources as described above.

Paper used: Staples photo plus glossy photopaper.

Specifications:

Size: 4 x 6 inches to print. Cut in half 4 x 3 to test

Weight: 270 g/m2

Pounds: 72 lbs.

Thickness: 10.5 mil

Inks used in this test: Genuine CLi-8 series canon ink cartridges AND Inkfarm remanufactured CLi-8 series ink cartridges (To compare directly this time around.)

Ink colors in ink cartridges - black, magenta, photo magenta, red, green, cyan, photocyan, and yellow.

Time of beginning of test: midnight 7/23/16.

At 0 time the test prints are shown side by side in the images below:

The room testing was done in the visible light range using a 13 watt CFL bulb, 2700 Kelvin, producing 800 lumens at the source. The test prints were 3 inches (0.0762 meters) away from the light source and under 1/8 in thick clear glass (which does NOT block UV light). The temperature was a maximal of 31.9 degrees centigrade and relative humidity was an average of 36% at the surface of the test prints. The control prints were face down and received no light exposure but were at the same temperature and relative humidity as the test prints. Time of start of test 7/23/16 at Midnight. The ozone content of the air was not measured but assumed to be somewhere between .003 to 0.0125 ppm.

Preliminary test results for fade test with UV exposure x 14 days are shown in the image below:

Upper left is Infarm ink Test photo, Upper right is Inkfarm ink Control photo, Lower left is Canon genuine ink Test photo, and Lower right is Canon genuine ink Control photo. All were exposed to UV light, temperature and humidity as described in the text above. Note the fading and color change of both Inkfarm and genuine Canon inks upon UV exposure. Canon suffered more than Inkfarm. Both

Suffered mostly in the Yellow and Magenta ranges. Black faded also. It is known in extensive tests at the Aardenburg Imaging & Archives that yellow and magenta are the “weak links” in inkjet fade tests with yellow more susceptible than magenta.

Next is a comparison of Control photos in the UV test chamber versus Control photos in room light.

The purpose of this test was to see the independent effect of humidity and temperature on the photos. All control photos did not receive any light exposure. All control photos seem to have no significant differences, at least at the 14 day marker. The photos in the UV testing were at 52 degrees centigrade and 20 % relative humidity. The photos in the room testing were at 31.9 degrees centigrade and 35% relative humidity. The ozone content of the air in the relative testing procedures is not known but presumed to be between 0.003 and 0.0125 ppm.

A different test was run using exact same photos printed with Canon ink and Ink farm ink either as controls or exposed to 500 + lumens of CFL light for 4 months. The temperature in the room averaged 80 degrees Fahrenheit and humidity about 52%. There was no fade observed on the controls. Surprisingly there was minor fading on BOTH canon and Ink farm test Photos. Note the average lumens in an average lit room is about 50 lumens. The lumens in this test are comparable to an extremely well lit office spaces. So there is a need to keep light exposure to fine digital photos low and use protective glass over the artwork. See insert photo of test. : Upper left canon control, upper right canon test, lower left ink farm control, lower right ink farm test….The amount of fade is approximately equal between the canon and ink farm test photos.

500 Lumens of CFL light x 4 months exposure, photos as above. Upper left Canon control 500 lumens x 4 months, Upper right Canon test 500 lumens x 4 months. Lower left Inkfarm control 500 lumens x 4 months, lowers right Inkfarm test 500 lumens x 4 months. It is apparent that bright CFL light causes fade of fine digital prints but the difference between genuine canon ink and inkfarm ink is negligible.

UV light is very destructive to fine digital photos, bright light especially direct sunlight should be avoided at all costs. Any comments from Ink farm would be appreciated. I will definitely be buying their inks from this time forward!!!! You have my permission to use this information in any way as you like. Just give me credit for the report and photo credits.

Leonard Aschenbrand

121 Vincent Ave Apt 1C

Lynbrook, NY 11563

516-462-2492

Leonard525@aol.com