LGC AXIO Proficiency Testing Schemes 2027
Surface And Groundwaters (Inorganic And Nutrients) Sample Code Matrix Analytes PT-AQ-01H Major Inorganic Components (Hard) Hard, surface water
Calcium; Magnesium; Total Hardness; Alkalinity; Potassium; Sodium; Chloride; Sulfate; Fluoride; Conductivity (20°C); Kjeldahl Nitrogen; Total Phosphorus; Barium
PT-AQ-01S Major Inorganic Components (Soft) PT-AQ-02A pH in Poorly Buffered Deionised Waters
Soft, surface water Calcium; Magnesium; Total Hardness; Alkalinity; Potassium; Sodium; Chloride; Sulfate; Fluoride; Conductivity (20°C); Kjeldahl Nitrogen; Total Phosphorus; Barium
Poorly buffered deionised water
pH at 20-25°C – Low; pH at 20-25°C – High
PT-AQ-02H Nutrients and Others (Hard) PT-AQ-02S Nutrients and Others (Soft) PT-AQ-03 Non-specific Analytes PT-AQ-03A Inorganic Disinfection Byproducts
Hard, surface water
Total Oxidised Nitrogen (TON); Silicate; Nitrite; Ammonia; Soluble Reactive Phosphorus (PO4); pH at 20-25°C; Conductivity (20°C); Colour; Colour ISO 7887-C; Permanganate Index (PI); Total Cyanide; Free Cyanide; Nitrate; Total Dissolved Solids
Soft, surface water Total Oxidised Nitrogen (TON); Silicate; Nitrite; Ammonia; Soluble Reactive Phosphorus (PO4); pH at 20-25°C; Conductivity (20°C); Colour; Colour ISO 7887-C; Permanganate Index (PI); Total Cyanide; Free Cyanide; Nitrate; Total Dissolved Solids
Spiking solution(s) BOD (5 day); COD; Suspended Solids; Methylene Blue
Active Substances (MBAS); Non-Ionic Surfactants; Dissolved Organic Carbon; Turbidity
Spiking solution(s) Bromide; Bromate; Chlorate (low level); Chlorite (low level); Chlorate (high level); Chlorite (high level)
PT-AQ-04 Metals
Surface water
Iron; Manganese; Copper; Aluminium; Zinc; Silver; Barium; Boron; Strontium; Lithium
PT-AQ-04A Dissolved Metals
Surface water
Iron; Manganese; Copper; Aluminium; Zinc; Barium; Boron; Strontium; Lithium Iron; Manganese; Copper; Aluminium; Zinc; Silver; Barium; Boron; Strontium; Lithium
PT-AQ-04G Metals PT-AQ-05 Toxic Metals
Groundwater
Surface water
Cadmium; Lead; Nickel; Selenium; Arsenic; Antimony; Mercury; Cobalt; Vanadium; Chromium; Molybdenum; Tin; Beryllium; Titanium
PT-AQ-05A Metals for Hydride Generation
Deionised water
Arsenic; Selenium; Antimony; Tin
PT-AQ-05B EQS Metals
Deionised water
Cadmium; Copper; Total Chromium; Lead; Nickel; Zinc; Vanadium; Mercury
PT-AQ-05C Chromium (VI) PT-AQ-05G Toxic Metals PT-AQ-34A Water Framework Directive
Spiking solution(s) PT-AQ-05C Chromium (VI)
Groundwater
Cadmium; Lead; Nickel; Selenium; Arsenic; Antimony; Mercury; Cobalt; Vanadium; Chromium; Molybdenum; Tin; Beryllium; Titanium; Lanthanum
Spiking solution(s) Cadmium; Lead; Mercury; Nickel
Bottled mineral water Sample Code Matrix
Analytes
PT-AQ-59 Bottled Mineral Water
Bottled Mineral Water
Calcium; Magnesium; Potassium; Sodium; Bicarbonate; Chloride; Sulfate; Nitrate; pH; TDS/Dry Residue
Download Application Form Download Scheme Description
lgcstandards.com/AXIO-PT 71
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