Historical Oddy Test Results: Muslin and Flannel

Oddy Test Results for cotton muslin and cotton flannel

MUSLIN
TEST PROCEDURE: Oddy

12/06/2013

The standard series of Oddy Tests were carried out on Sample #1: Muslin 140 thread count: preshrunk. The batch passed the lead foil test, passed the copper foil test and passed the silver foil test. The conclusion from these tests is that the fabric is safe to use in contact with art objects or in packing and display.

The tests were performed over a period of 40 days with the silver, lead and copper coupons touching the individual fabric samples and exposed to high RH at 25 degrees centigrade during this time period.

FLANNEL - 8 oz.
TEST PROCEDURE: Oddy

An Oddy test was conducted on one sample of 100% cotton flannel.

The standard Oddy tests were carried out on the following material as well as the sodium azide test for active sulfur compounds. The tests were carried out for 45 days at 30 degrees centigrade using pure coupons of copper, lead and silver at high rH. In no case was any corrosion of the coupons observed. No reaction above background occurred with the sodium azide test. The material is therefore considered to be safe in the storage or display of museum objects. 

DAY	SAMPLE NUMBER	PRODUCT DESCRIPTION	OBSERVATION
1-45	Sample 1 : 7.5 oz (called 8 oz) flannel	81-150	No change in test blanks.

 

FLANNEL - 4 oz.
TEST PROCEDURE: Oddy

An Oddy test was conducted on five samples of flannel cloth. The test procedre was as follows: Each sample was enclosed in a separate glass vial with blanks of polished lead, silver, and copper. Half of each sample was placed beneath the blanks so that any effect of direct contact, as well as volatile contaminates, could be assessed. Moist cotton was placed in the test vial, which was then sealed and exposed to 60°F for 35 days.

A control vial was prepared in the same manner, without any sample, and exposed to the same conditions.

DAY	SAMPLE NUMBER	PRODUCT DESCRIPTION	OBSERVATION
1-35	Sample 5: 4 oz. double napped	81-110	No change in test blanks. Sample was colorfast.

 

Requested by Benchmark, Rosemont, N.J. 08556