KITCHENWARE OF TRANSPARENT. NONGLAZED GLASS CERAMICS.

SEC. 1781. KITCHENWARE OF TRANSPARENT. NONGLAZED GLASS CERAMICS. Subpart B of part 1 of the Appendix is amended by inserting in numerical sequence the following new item: 102 STAT. 1298 “ 909.15 Kitchenware of glass-ceramics, nonglazed, greater than 75 percent by volume crystalline, containing lithium aluminosilicate, having a linear coefficient of expansion not exceeding 10x10-7 per Kelvin within a temperature range of 0° C to 300° C. transparent, haze-free, exhibiting transmittance® of infrared radiations in excess of 75 percent at a wavelength of 2.5 microns when measured on a sample 3 mm. in thickness, and containing beta-quartz solid solution as the predominant crystal phase (provided for in item 534.97, part 2C. schedule 5) Free No change On or before 12/31/90 ”,