ASTM C1536-19 PDF Download

The ASTM C1536-19 standard provides a method to determine the quantity of linear units of foam sealant that can be obtained from each container of an aerosol product. This measurement is important for estimating the contents of the aerosol container and providing information to estimate job requirements.

The standard highlights that the yield measurement does not predict the performance capability or suitability of the foam sealant product for its intended application. It also recognizes that there are two main types of foam sealants applicable to this standard: single component polyurethane and latex.

The test method includes two procedures. Procedure A is used for products that can be volumetrically measured by submersion in water, while Procedure B is used for products that cannot be measured using a water displacement method.

One important consideration in determining the yield is the bead size dispensed. The standard notes that extrapolation of test results from larger bead sizes to estimate smaller bead sizes may result in inaccuracies. Therefore, the operator should determine the nominal initial bead size required to produce a specific cured bead diameter, taking into account the foam characteristic known as "post dispensing contraction" or "post dispensing expansion."