B e n c h m a r k
B e n c h m a r k
The fabrics that we are selling are indicated in pale green by their product number (e.g. 35-111SG Steel Grey ). If there is no product number following a sample, we were not happy enough with that sample's test results to sell it.
Oddy Test Results for 7 samples of Adhesive-Backed Sueded Polyethylene Padding as follows:
TEST PROCEDURE: Oddy
An Oddy style test was conducted on seven samples of adhesive-backed sueded polyethylene padding. The test procedure was as follows: Each sample was enclosed in a glass vial with blanks of polished lead, silver and copper. Half of each sample was placed beneath the blanks so that the affect of direct contact as well as volatile contaminates could be assessed. Moist cotton was placed in each vial, which was then sealed and exposed to 60oC for 35 days. A control vial was prepared in the same manner and exposed to the same conditions.
| DAY | SAMPLE DESCRIPTION | OBSERVATION | |
| 1-35 | Sample 1 | 35-111SG Steel Grey | Pinpoint black dots on copper blank on area not touching sample noticed at end of test. |
| 1-35 | Sample 2 | Small white crystalline products on lead blank. At conclusion of test, very distinct corrosion on lead beneath fabric. | |
| 1-35 | Sample 3 | 35-111BG Beige | No change in test blanks. |
| 1-35 | Sample 4 | 35-111CH Camelhair | No change in test blanks. |
| 1-35 | Sample 5 | 35-111BR Brown | No change in test blanks. |
| 1-35 | Sample 6 | 35-111WB Warm Black | No change in test blanks. |
| 1-25 | Sample 7 | 35-111CR Crème | No change in test blanks. (This color was done after the other 6 in a separate test.) |
| 1-35 | Control | No change in test blanks. |
INTERPRETATION OF RESULTS
Samples 3-6 caused no corrosion or discoloration of the metal blanks. The copper blank in sample number 1, the gray-colored suede, showed a few pinpoint black dots. These were only apparent upon very close examination and may be due to imperfections in the blank. They did not cause the fabric to fail the test. Sample number 2, the green-colored suede, caused definite corrosion of the lead blank. Presumably the problem with this sample was caused by a dye component. Based on the results from this test, the green sueded padding should not be used in association with museum objects.
Requested by Benchmark, Rosemont, N.J. 08556