PROFICIENCY TESTING PROGRAMS SOILS & INPUTS A15 15a 24 A38a A38b 45 Soils Fresh soils Mineral fertilizers Activated sludge, sediments, Soil: Physico-chemistry Activated sludge, sediments, Soil: Micropollutants Organic fertilizers A = PTS accredited by COFRAC 1 / 7
15 SOILS Proficiency testing scheme created in 1983 85 registered laboratories from 24 countries PTS accredited by COFRAC 10 rounds per annual series Desiccated and sieved (2 mm) soils of different origins. Physical: Active lime Carbonate Humidity Granulometric: Clay Rough silt Rough sand Fine sand Fine silt Chemical: Ammoniacal nitrogen Free cations Conductivity at 25 C Free K2O, CaO, MgO and Na2O Nitric nitrogen Organic carbon ph KCl, ph H2O P2O5 Total nitrogen Arsenic Boron Cadmium Chromium Copper Iron Lead Manganese Mercury Nickel Zinc. 2/7
15a FRESH SOILS Proficiency testing scheme created in 2016 1 round per annual series Fresh soil Nitric nitrogen - N-NO3 to J0 Ammoniacal nitrogen - N-NH4 at J0 Nitric nitrogen N-NO3 to 28 days at 28 C Ammoniacal nitrogen N-NH4 at 28 days at 28 C Carbon mineralized to 28 days at 28 C Extractible carbon fumigated sample Extractible carbon unfumigated sample Extractible organic carbon Water content on a mass basis Weight of the fraction 50-200 μm Carbon content of the fraction 50-200 μm Nitrogen content of the fraction 50-200 μm Weight of the fraction 200-2000 μm Carbon content of the fraction 200-2000 μm Nitrogen content of the fraction 200-2000 μm 3/7
24 MINERAL FERTILIZERS Proficiency testing scheme created in 1994 65 registered laboratories from 29 countries 7 rounds per annual series (Oct, Nov, Dec, Jan, Feb, March, April) Ammonium nitrate + S Ammonium nitrate Basic mineral fertilizer Calcic soil conditioner Calcic soil conditioner + P + K DAP ou MAP Fertilizer conditioner + MgO Fertilizer conditioner Fertilizer + MgO Kieserite Liquid fertilizer Limy fertilizer + MgO NP NPK NP + S NPK + SO3 NPK + MgO + S NPK + TSP NPK + S NPK + trace elements Magnesium oxide Organomineral fertilizer P2O5 K2O PK Natural phosphate PK + MgO SSP TSP Urea. Ammoniacal nitrogen Calcium soluble in water Carbonic solubility Calcium carbonate Chlorides Combustible components Chlorine of chlorides Density Dry matter Dry granulometry Moist granulometry Moisture content Neutralizing value Nitric nitrogen Potassium total Potassium soluble in water ph Solubility of phosphate (formic acid) Sulfur soluble in water Soluble magnesium Total sulfur Total sulfate Total magnesium Total nitrogen Total boron Total calcium Total carbonate Total iron Total phosphorus Total sodium Total manganese Total molybdenum Ureic nitrogen Al, Cu, Fe, Mn, Mo, Na, Zn, Cl 4/7
38a ACTIVATED SLUDGES, SEDIMENTS, SOILS PHYSICO CHEMISTRY Proficiency testing scheme created in 2016 (used to be part of PTS 38 since 1998) 53 registered laboratories from 18 countries PTS accredited by COFRAC 5 rounds per annual series Activated sludge Costal sediments Marine sediments Soils Ammonium Calcium Dry matter Kjeldahl nitrogen Iron Manganese Magnesium ph Potassium Sodium NA Total phosphorus Total hydrocarbons Total organic carbon Metals: Al, As, Ag, Ba, Be, B, Ca, Cd, Cr, Co, Cu, Li, Hg, Mo, Ni, Pb, Se, S, Sr, Te, Tl, Ti, U, V, Zn. 5/7
38b ACTIVATED SLUDGES, SEDIMENTS, SOILS MICROPOLLUTANTS Proficiency testing scheme created in 2016 (used to be part of PTS 38 since 1998) 53 registered laboratories from 18 countries PTS accredited by COFRAC 5 rounds per annual series Activated sludge Costal sediments Marine sediments Soils Organophosphorus : Azinphos-ethyl Chlorpyrifos Chlorfenvinphos Diazinon Parathion-ethyl PCB: PCB 28, 31, 52, 101, 118, 138, 153, 180 Organochlorine insecticides: 4,4' DDT Aldrin Dieldrin Endosulfan beta Endrin HCH alpha/beta/delta Hexachlorobenzene Isodrin Lindane PAH: Acenaphtene Acenaphtylene Anthracene Benzo(a)anthracene Benzo(a)pyrene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(ghi)perylene Chrysene Dibenzo(ah)anthracene Fluoranthene Fluorene Indeno(123cd)pyrene Methyl(2)fluoranthene Methyl(2)naphtalene Naphtalene Phenantrene Pyrene, etc. 6/7
45 ORGANIC FERTILIZERS Proficiency testing scheme created in 2001 36 registered laboratories from 12 countries 5 rounds per annual series Compost with sludge Growing media + fertilizer Growing media Organic fertilizer Soil conditioner Soil conditioner + fertilizer Soil conditioner with sludge. Ammoniacal nitrogen Air volume Arsenic Calcium soluble in water Cadmium Calcium (in CaO) Chlorides Chromium Conductivity at 25 C Copper Compacted density Dry matter Dry apparent density Lead Magnesium (in MgO) Magnesium soluble in water Mercury Nickel Nitric nitrogen Organic carbon Organic matter ph Phosphorus (in P2O5) Phosphorus soluble in water Potassium soluble in water Potassium (in K2O) Retraction value Selenium Sulfur S-SO4 Total porosity Total nitrogen Water volume Zinc. 7/7