Standard Reference Sample Project
Results for the Spring 2012 Inter-laboratory Comparison Study
List of participating laboratories
Analytes determined in each SRS
Sample Prep / water source
Explanation of Statistics
Compiled list of MPVs
Sample Statistics
Major (M-202)
Alkalinity as CaCO3
Boron
Bromide
Calcium
Chloride
Fluoride
Magnesium
pH
Potassium
Residue on Evaporation
Silica
Sodium
Specific Conductance
Strontium
Sulfate
Total Phosphorus as P
Vanadium
Trace (T-209)
Aluminum
Antimony
Arsenic
Barium
Beryllium
Boron
Cadmium
Calcium
Chromium
Cobalt
Copper
Iron
Lead
Lithium
Magnesium
Manganese
Molybdenum
Nickel
Potassium
Selenium
Silica
Silver
Sodium
Strontium
Thallium
Uranium
Vanadium
Zinc
Mercury (Hg-54)
Mercury
Precipitation (P-58)
Calcium
Chloride
Fluoride
Magnesium
Orthophosphate as P
pH
Potassium
Sodium
Specific Conductance
Sulfate
Nutrient (low) (N-113)
Ammonia + Organic Nitrogen as N
Ammonia as N
Nitrate as N
Nitrite + Nitrate as N
Orthophosphate as P
Total Nitrogen
Total Phosphorus as P
Nutrient (high) (N-114)
Ammonia + Organic Nitrogen as N
Ammonia as N
Nitrate as N
Nitrite + Nitrate as N
Orthophosphate as P
Total Nitrogen
Total Phosphorus as P
Individual Laboratory Performance
Lab # 1
Lab # 2
Lab # 4
Lab # 8
Lab # 10
Lab # 12
Lab # 16
Lab # 18
Lab # 21
Lab # 23
Lab # 24
Lab # 25
Lab # 26
Lab # 31
Lab # 32
Lab # 34
Lab # 38
Lab # 42
Lab # 45
Lab # 46
Lab # 50
Lab # 59
Lab # 64
Lab # 72
Lab # 76
Lab # 80
Lab # 85
Lab # 86
Lab # 89
Lab # 91
Lab # 97
Lab # 100
Lab # 102
Lab # 105
Lab # 110
Lab # 118
Lab # 121
Lab # 138
Lab # 142
Lab # 146
Lab # 149
Lab # 151
Lab # 158
Lab # 180
Lab # 183
Lab # 193
Lab # 198
Lab # 205
Lab # 208
Lab # 209
Lab # 212
Lab # 219
Lab # 227
Lab # 234
Lab # 235
Lab # 238
Lab # 254
Lab # 297
Lab # 298
Lab # 304
Lab # 305
Lab # 307
Lab # 313
Lab # 316
Lab # 318
Lab # 319
Lab # 320
Lab # 323
Lab # 330
Lab # 333
Lab # 341
Lab # 356
Lab # 373
Lab # 374
Lab # 375
Lab # 377
Lab # 379
Lab # 380
Lab # 381
Lab # 386
Lab # 388
Lab # 390
Lab # 393
Lab # 395
Lab # 397
Lab # 399
Lab # 407
Lab # 410
Lab # 411
Lab # 413
Lab # 419
Lab # 422
Lab # 423
Lab # 430
Lab # 435
Lab # 438
Lab # 446
Lab # 447
Lab # 454
Lab # 457
Lab # 458
Lab # 537
Lab # 538
Lab # 540
Lab # 542
Lab # 545
Lab # 546
Lab # 549
Lab # 550
Lab # 551
Lab # 552
Lab # 554
Lab # 555
![[US Geological Survey]](/srs_study/images/usgsid.gif)
