ASTM D1849 Test for Package Stability of Paint

Scope:

ASTM D1849 is used to determine the package stability of paint. The information from this test can be used in quality control and design and development. 

Test Procedure:

In the ASTM D1849 method, paint samples in the original, closed container are taken. The sample is brought around a specific temperature. Any evidence of pressure or vacuum in the unopened container is noted. Each container is opened to note any skinning, corrosion, and odor of putrefaction, rancidity, or souring.

The nature of the lower or settled layer is measured with a spatula if the sample is in a 1 litre or smaller container. The sample is stirred to ensure the uniform distribution of any settled material. 

After stirring, the consistency of the paint is measured. Each of the stored paints is applied to its own test panel and the control paint to another. After the brushed film has completely dried, it is examined for grains approximately 0.8 mm in diameter, even larger gelatinous lumps, and streaks caused by such grains or lumps.

Video 01: Package stability of paints ASTM D1849 

Specimen Size: 

ASTM D1849 is a standard test method that describes a procedure for determining the package stability of paints. The specimen size used in this test method is not specified, as it does not involve testing a physical sample of paint.

Instead, the test involves measuring the viscosity of a paint sample that has been stored in its original container for a specific period of time under controlled conditions. The viscosity measurements are taken at different time intervals to determine the package stability of the paint.

Data: 

The following information is reported: 

The time of storage and the temperature of storage. The initial and final sample weight.  Skinning, pressure, corrosion of the container, and odor of spoilage, each quality separately designated as follows: 10 = none 8 = very slight 6 = slight 4 = moderate 2 = considerable 0 = complete failure

The rigidity of the lower layer; Consistency as the Stormer viscosity of the paint samples. Grains, lumps, or streaks in the brushed film are designated as follows: 10 = none 8 = very slight 6 = slight 4 = moderate 2 = considerable 0 = complete failure

Conclusion:

ASTM D1849 test method is a valuable tool for evaluating the quality and performance of paint products. By following this standard test method, manufacturers can ensure that their products meet the required stability and performance standards, and consumers can have confidence in the durability and longevity of the paints they purchase.