[US Geological Survey]

Standard Reference Sample Project

Inter-laboratory Comparison Study Results

Historical Laboratory Performance (5 year span)

For custom Historical Laboratory Performance Charts contact the SRS Project Chief at gs-w_lasd_qsb_srs@usgs.gov

Choose a Round

(standard reference sample names are listed in parentheses)

Spring 2022 ( M-242 T-249 Hg-74 P-78 N-153 N-154 )

Fall 2021 ( M-240 T-247 Hg-73 P-77 N-151 N-152 )

Spring 2021 ( M-238 T-245 Hg-72 P-76 N-149 N-150 )

Fall 2020 ( M-236 T-243 Hg-71 P-75 N-147 N-148 )

Spring 2020 ( M-234 T-241 Hg-70 P-74 N-145 N-146 )

Fall 2019 ( M-232 T-239 Hg-69 P-73 N-143 N-144 )

Spring 2019 ( M-230 T-237 Hg-68 P-72 N-141 N-142 )

Fall 2018 ( M-228 T-235 Hg-67 P-71 N-139 N-140 )

Spring 2018 ( M-226 T-233 Hg-66 P-70 N-137 N-138 )

Fall 2017 ( M-224 T-231 Hg-65 P-69 N-135 N-136 )

Spring 2017 ( M-222 T-229 Hg-64 P-68 N-133 N-134 )

Fall 2016 ( M-220 T-227 Hg-63 P-67 N-131 N-132 )

Spring 2016 ( M-218 T-225 Hg-62 P-66 N-129 N-130 )

Fall 2015 ( M-216 T-223 Hg-61 P-65 N-127 N-128 )

Spring 2015 ( M-214 T-221 Hg-60 P-64 N-125 N-126 )

Fall 2014 ( M-212 T-219 Hg-59 P-63 N-123 N-124 )

Spring 2014 ( M-210 T-217 Hg-58 P-62 N-121 N-122 )

Fall 2013 ( M-208 T-215 Hg-57 P-61 N-119 N-120 )

Spring 2013 ( M-206 T-213 Hg-56 P-60 N-117 N-118 )

Fall 2012 ( M-204 T-211 Hg-55 P-59 N-115 N-116 )

Spring 2012 ( M-202 T-209 Hg-54 P-58 N-113 N-114 )

Fall 2011 ( M-200 T-207 Hg-53 P-57 N-111 N-112 )

Spring 2011 ( M-198 T-205 Hg-52 P-56 N-109 N-110 )

Fall 2010 ( M-196 T-203 Hg-51 P-55 N-107 N-108 )

Spring 2010 ( M-194 T-201 Hg-50 P-54 N-105 N-106 )

Fall 2009 ( M-192 T-199 Hg-49 P-53 N-103 N-104 )

Spring 2009 ( M-190 T-197 Hg-48 P-52 N-101 N-102 )

Fall 2008 ( M-188 T-195 Hg-47 P-51 N-99 N-100 )

Spring 2008 ( M-186 T-193 Hg-46 P-50 N-97 N-98 )

Fall 2007 ( M-184 T-191 Hg-45 P-49 N-95 N-96 )

Spring 2007 ( M-182 T-189 Hg-44 P-48 N-93 N-94 )

Fall 2006 ( M-180 T-187 Hg-43 P-47 N-91 N-92 )

Spring 2006 ( M-178 T-185 Hg-42 P-46 N-89 N-90 )

Fall 2005 ( M-176 T-183 Hg-41 P-45 N-87 N-88 )

Spring 2005 ( M-174 T-181 Hg-40 P-44 N-85 N-86 )

Fall 2004 ( T-179 M-172 P-43 N-83 N-84 Hg-39 )

Spring 2004 ( T-177 M-170 P-42 N-81 N-82 Hg-38 )

Fall 2003 ( T-175 M-168 P-41 N-79 N-80 Hg-37 )