In an LSSDLBIST scan design, AC scan test coverage is enhanced with a scan chain configuration capable of selectively inverting scan-in signals. These products are further applied to objects to make the objects have far infrared features and other beneficial physical properties. A guard ring extends from about 3 micrometers to about 15 micrometers into the epitaxial layer. The apparatus may also include one or more third frames that extend below the second fame when the second frame is in the lowered position, the one or more third frames providing one or more additional rungs of the boarding ladder. The mold material mixtures, also in the form of multicomponent systems, are used for the production of molds and cores for the foundry industry.