1.1.1 ,The range of applicability for this test method, based on the interlaboratory study conducted in 2005,2 is aluminum (10 to 600), antimony (10 to 2300), barium (50 to 800), calcium (20 to 50 ,000), iron (10 to 360), lithium (300 to 3200), magnesium (30 to 10 ,000), molybdenum (50 to 22 ,000), phosphorus (50 to 2000), silicon (10 to 15 ,000), sodium (30 to 1500), sulfur (1600 to 28 ,000), and zinc (300 to 2200), all in mg/kg. Lower levels of elements may be determined by using larger sample weights, and higher levels of elements may be determined by using smaller amounts of sample or by using a larger dilution factor after sample dissolution. However, the test precision in such cases has not been determined, and may be different than the ones given in Table 1.