ENX 3W_P2_02468 2014-01-01 to 2014-08-22 7 months, 22 days Grainger Engineering Library • Engineering Library • Third • West UIUC Library PresCons Preservation Environment Evaluation Type of Decay Risks & M etrics Natural Aging Chemical decay of organic materials Evaluation & General Comments OK Generally OK, but fast decaying organic materials such as acidic paper, color photographs and cellulosic plastics will be at elevated risk due to the cumulative effects of temperature and humidity TWPI = 45 RISK Mechanical Damage Physical damage to hygroscopic materials Heightened risk of physical damage to any hygroscopic material, such as paintings, rare books, furniture, paper, leather, film, or color photos, due to extremely low or high levels of humidity, and / or excessive humidity fluctuation. % DC = 2.04 % EMC min = 3.3 % EMC max = 10.6 Mold Risk M old growth in area or on collection objects GOOD M inimal risk of mold growth. MRF = 0 Metal Corrosion Corrosion of metal components or objects RISK Heightened risk of metal corrosion due to extended periods of high levels of humidity. % EMC max = 10.6 Graphs Temperature °F Relative Humidity % RH 100°F 100% 90°F 80% 80°F 60% 70°F 60°F 40% 50°F 20% 40°F 30°F 0% M ar M ay Jul Sep M ar M ay Jul Sep Statistics Temperature T°F T°F T°F T°F Mean Median Stdev Min T°F Max Relative Humidity 72.5 71.9 1.9 69.9 %RH %RH %RH %RH Mean Median Stdev Min 82.2 %RH Max Dew Point 38 37 18 8 DP°F DP°F DP°F DP°F Mean Median Stdev Min 62 DP°F Max eClimateNotebook® - Image Permanence Institute - Rochester Institute of Technology - © 2014 Overview Report - Created: 2014-10-17 41.9 55 13.6 10.2 57.5 ENX LowerCenter_P2_02464 2014-01-01 to 2014-09-17 8 months, 17 days Grainger Engineering Library • Engineering Library • Lower • Center UIUC Library PresCons Preservation Environment Evaluation Type of Decay Risks & M etrics Evaluation & General Comments RISK Natural Aging Chemical decay of organic materials Accelerated rate of chemical decay in all organic materials due to the cumulative effects of temperature and humidity, with especially high risk for fast decaying organic materials such as acidic paper, color photographs and cellulosic plastics. TWPI = 40 RISK Mechanical Damage Physical damage to hygroscopic materials Heightened risk of physical damage to any hygroscopic material, such as paintings, rare books, furniture, paper, leather, film, or color photos, due to extremely low or high levels of humidity, and / or excessive humidity fluctuation. % DC = 2.01 % EMC min = 3.7 % EMC max = 10.9 Mold Risk M old growth in area or on collection objects GOOD M inimal risk of mold growth. MRF = 0 Metal Corrosion Corrosion of metal components or objects RISK Heightened risk of metal corrosion due to extended periods of high levels of humidity. % EMC max = 10.9 Graphs Temperature °F Relative Humidity % RH 100°F 100% 90°F 80% 80°F 60% 70°F 60°F 40% 50°F 20% 40°F 30°F 0% M ar M ay Jul Sep M ar M ay Jul Sep Statistics Temperature Relative Humidity Dew Point T°F Mean T°F Median 71.7 71.6 %RH Mean %RH Median 39 37 DP°F Mean DP°F Median 41.8 54.2 T°F Stdev T°F Min T°F Max 0.5 69.8 74.3 %RH Stdev %RH Min %RH Max 20 9 64 DP°F Stdev DP°F Min DP°F Max 15 9.7 58.4 eClimateNotebook® - Image Permanence Institute - Rochester Institute of Technology - © 2014 Overview Report - Created: 2014-10-17 ENX LowerW_P2_02467 2014-01-01 to 2014-08-22 7 months, 22 days Grainger Engineering Library • Engineering Library • Lower • West UIUC Library PresCons Preservation Environment Evaluation Type of Decay Risks & M etrics Natural Aging Chemical decay of organic materials Evaluation & General Comments OK Generally OK, but fast decaying organic materials such as acidic paper, color photographs and cellulosic plastics will be at elevated risk due to the cumulative effects of temperature and humidity TWPI = 63 RISK Mechanical Damage Physical damage to hygroscopic materials Heightened risk of physical damage to any hygroscopic material, such as paintings, rare books, furniture, paper, leather, film, or color photos, due to extremely low or high levels of humidity, and / or excessive humidity fluctuation. % DC = 2.14 % EMC min = 3.5 % EMC max = 11.2 Mold Risk M old growth in area or on collection objects GOOD M inimal risk of mold growth. MRF = 0 Metal Corrosion Corrosion of metal components or objects RISK Heightened risk of metal corrosion due to extended periods of high levels of humidity. % EMC max = 11.2 Graphs Temperature °F Relative Humidity % RH 100°F 100% 90°F 80% 80°F 60% 70°F 60°F 40% 50°F 20% 40°F 30°F 0% M ar M ay Jul Sep M ar M ay Jul Sep Statistics Temperature T°F T°F T°F T°F Mean Median Stdev Min T°F Max Relative Humidity 70.9 70.1 1.9 68.5 %RH %RH %RH %RH Mean Median Stdev Min 76.8 %RH Max Dew Point 31 27 16 8 DP°F DP°F DP°F DP°F Mean Median Stdev Min 61 DP°F Max eClimateNotebook® - Image Permanence Institute - Rochester Institute of Technology - © 2014 Overview Report - Created: 2014-10-17 36 34.1 12.4 9.7 56.6