Sample** Al Ca Fe K Mg Mn Si Sn Na Zn Cu Ti B1 2699 75829 3081 * 2844 31357   n/d n/d 4739 3164 325 506 B2 2403 81136 2840 * 6288 24630 n/d n/d 4057 2825 334 418 B3 1887 62745 1961 * 4510 18477 n/d n/d 3922 2290 352 361 B4 2037 87248 2685 * 5201 23433 n/d n/d 3356 3195 168 738   B7 1389 29024 237 * 3166 3429 n/d n/d 5277 347 186 196 F2 1266 23687 126 * 3023 1082 n/d n/d 5542 178 214 194 G2 1267 25411 90 * 2990 1147 n/d n/d 3587 171 153 194 H2 1481 22329 80 * 3509 41 n/d n/d 4625 65 12 164 I2 1371 24000 80 * 3600 19 n/d n/d 5067 79 10 182 **B. thuringiensis israelensis spore samples *not reported n/d = none detected Other elements reported: Rb, Ba, Sr, Mo, and Pb: all values were below 12 ppm except for 2 samples with Pb between 12-20 ppm and 3 samples with Sr between 16-105 ppm.

Table 2: Elements (ppm) in B. thuringiensis samples prepared and processed by various methods measured by inductively-coupled plasma atomic emission spectroscopy (ICP-OES) (data from Velsko, S, Bioagent sampling matching using elemental composition data: An approach to validation, ICR:-TR-220803, Lawrence Livermore Laboratory, 2006).