AXIO | Proficiency Testing schemes 2026
Quantity of Matrix
Rounds per Year
Sample Code Matrix
Analytes
PT-CN-1a
Standard solution
8ml
Barium; Beryllium; Cadmium; Chromium; Cobalt; Copper; Iron; Lead; Manganese; Molybdenum; Nickel; Thallium; Tin; Vanadium; Zinc 5
PT-CN-1b PT-CN-1c PT-CN-2
Standard solution Standard solution
8ml 8ml
Antimony; Arsenic; Selenium
5 5 5
Mercury
Solution of soil extract
60ml
Antimony; Arsenic; Barium; Beryllium; Cadmium; Chromium; Cobalt; Copper; Iron; Lead; Manganese; Mercury; Molybdenum; Nickel; Selenium; Thallium; Tin; Vanadium; Zinc Antimony; Arsenic; Barium; Beryllium; Cadmium; Chromium; Cobalt; Copper; Iron; Lead; Manganese; Mercury; Molybdenum; Nickel; Selenium; Thallium; Tin; Vanadium; Zinc; Chromium (VI) Ammonia; Complex Cyanide; Free Cyanide; Total Cyanide; Dry Matter; Loss on Ignition; pH; Thiocyanate; Total sulfate; Easily liberated sulfide; Water soluble boron; Water soluble chloride; Water soluble fluoride; Water soluble sulfate; Total Sulfur Acenaphthene; Acenaphthylene; Anthracene; Benz(a)anthracene; Benzo(b)fluoranthene; Benzo(k) fluoranthene; Benzo(b/k)fluoranthene (sum); Benzo(ghi)perylene; Benz(a)pyrene; Chrysene; Dibenz(ah)anthracene; Fluoranthene; Fluorene; Indeno(123-cd)pyrene; Naphthalene; Phenanthrene, Pyrene; Total PAH; Phenols; Cresols; Xylenols; Distillable phenolic substances; PCB (28); PCB (52); PCB (101); PCB (118); PCB (138); PCB (153), PCB (180); Elemental sulfur; Total organic carbon; TPH (C10-C40 inclusive); TPH Aliphatic >C10-C12; TPH Aliphatic >C12-C16; TPH Aliphatic >C16-C21; TPH Aliphatic >C21- C35; TPH Aliphatic >C35-C40; TPH Aromatic >EC10-EC12; TPH Aromatic >EC12-EC16; TPH Aromatic >EC16-EC21; TPH Aromatic >EC21-EC35; TPH Aromatic >EC35-EC40; PCB (77) Acenaphthene; Acenaphthylene; Anthracene; Benz(a)anthracene; Benzo(b)fluoranthene; Benzo(k) fluoranthene; Benzo(b/k)fluoranthene (sum); Benzo(ghi)perylene; Benz(a)pyrene; Chrysene; Dibenz(ah)anthracene; Fluoranthene; Fluorene; Indeno(123-cd)pyrene; Naphthalene; Phenanthrene, Pyrene
PT-CN-3a
Soil (prepared)
30g
5
PT-CN-3b
Soil (prepared)
150g
5
PT-CN-3c
Soil (prepared) Spiking solution
70g 1ml
5
PT-CN-5
Standard solution
2ml
5
PT-CN-6 PT-CN-7a PT-CN-7b PT-CN-8 PT-CN-10 PT-CN-11 PT-CN-12 PT-CN-13 PT-CN-14a
Standard solution Standard solution Standard solution Standard solution Standard solution Standard solution Standard solution Standard solution Standard solution
60ml 60ml
Total cyanide
5 5
Monohydric phenols
2 x 2ml
Total phenols (sum of phenol, cresols and xylenols); Total Cresols; Total Xylenols; Phenol 5
60ml 60ml
Total sulfate
5 5 5 5 5 5
Water soluble boron
2ml
PCB (28); PCB (52); PCB (101); PCB (118); PCB (138); PCB (153); PCB (180)
60ml 60ml
Easily liberated sulfide
Chromium (VI)
2ml 2ml
TPH, Range C10 – C40 (inclusive)
PT-CN-14b Standard solution
TPH, Aliphatic ≤C6; TPH, Aliphatic >C6-C8; TPH, Aliphatic >C8-C10; TPH, Aromatic C6; TPH, Aromatic >C6-C8; TPH, Aromatic >C8-C10 5
PT-CN-15
Standard solution
2ml
Benzene; Toluene; Ethylbenzene; o-xylene; m + p-Xylenes
5
PT-CN-16 PT-CN-17
Standard solution Standard solution
60ml 60ml
Thiocyanate Total fluoride
5 5
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