National Association of Testing Authorities, Australia
Scope of Accreditation
GSG Laboratories Pty Ltd
Site
Tamworth Enviro Ag Laboratory
Accreditation No.
20956
Site No.
16871
Date of Accreditation
01 Oct 2024
Contact
Availability
Services available to external clients
Scope of Accreditation
ISO/IEC 17025 (2017)
Agribusiness
| Service | Product | Determinant | Technique | Procedure |
|---|---|---|---|---|
| Analysis of physical and nutritional characteristics | Soils | Calcium; Magnesium; Potassium; Sodium | ICP-AES | in-house method ICP-11 |
| Arsenic; Cadmium; Chromium; Lead; Molybdenum; Nickel; Selenium | ICP-AES | in-house method ICP-11 | ||
| Phosphorus - Available (Bray) | UV-vis spectrophotometry | Rayment and Lyons 9E1 and in-house method PMS-11 | ||
| Carbon - Total | Dumas | Rayment and Lyons 6B2b | ||
| Nitrogen | Dumas | Rayment and Lyons 7A5 | ||
| Sulfur - Extractable | ICP-AES | Rayment and Lyons 10D1 and in-house method ICP-04 | ||
| Calcium - Exchangeable; Magnesium - Exchangeable; Potassium - Exchangeable; Sodium - Exchangeable | ICP-AES | Rayment and Lyons 15A1, 15A2, 15C1, 15D3 and in-house method ICP-06 | ||
| Phosphorus - Total | ICP-AES | in-house method ICP-13 | ||
| Aluminium - Exchangeable; Conductivity | ICP-AES | Rayment and Lyons 15G1 and in-house method ICP-07 | ||
| pH | Electrometric | Rayment and Lyons 4A1, 4B2 and in-house method PMS-04-01, 04-02 | ||
| Nitrogen - Total Kjeldahl (TKN) | UV-vis spectrophotometry | in-house method PMS-07 | ||
| Carbon - Organic | Dumas | Rayment and Lyons 6B3 | ||
| Chloride | Discrete analyser (DA) | in-house method DAP-06 | ||
| Texture | Visual examination | in-house method PMS-33 | ||
| Moisture | Gravimetric | AS1289.2.1.1 and in-house method PMS-17 | ||
| Micronutrients - DTPA extractable copper; Micronutrients - DTPA extractable iron; Micronutrients - DTPA extractable manganese; Micronutrients - DTPA extractable zinc | ICP-AES | Rayment and Lyons 12A1 and in-house method ICP-08 | ||
| Phosphorus - Available (Colwell); Phosphorus - Extractable | UV-vis spectrophotometry | Rayment and Lyons 9B1 and in-house method PMS-10 | ||
| Carbon - Organic | UV-vis spectrophotometry | Rayment and Lyons 6A1 | ||
| Salinity | Calculation | in-house method PMS-32 | ||
| Phosphorus buffer index (PBI) | UV-vis spectrophotometry | in-house method PMS-12 | ||
| Nitrate | Discrete analyser (DA) | in-house method DAP-03 | ||
| Sodium adsorption ratio (SAR, sodium absorption ratio) | Calculation | in-house method ICP-11 | ||
| Boron | ICP-AES | Rayment and Lyons 12C2 and in-house method ICP-05 | ||
| Conductivity | Electrometric | Rayment and Lyons 3A1 and in-house method PMS-03 |
ISO/IEC 17025 (2017)
Environment
| Service | Product | Determinant | Technique | Procedure |
|---|---|---|---|---|
| Analysis for elements | Ground waters; Irrigation and stock waters | Aluminium; Arsenic; Boron; Cadmium; Calcium; Chromium; Cobalt; Copper; Iron; Lead; Magnesium; Manganese; Nickel; Potassium; Sodium; Zinc | ICP-AES | APHA 3120 B and in-house method ICP-09 |
| Phosphorus; Sulfur | ICP-AES | in-house method ICP-09 | ||
| Soils | Potassium | ICP-AES | in-house method ICP-16, Rayment and Lyons 18A1 | |
| Arsenic; Cadmium; Chromium; Lead; Molybdenum; Nickel; Selenium | ICP-AES | in-house method ICP-15 | ||
| Analysis for nutrients | Ground waters; Irrigation and stock waters | Chloride | Discrete analyser (DA) | in-house method DAP-07 |
| Nitrate | Discrete analyser (DA) | in-house method DAP-04 | ||
| Soils | Nitrogen - Total Kjeldahl (TKN) | UV-vis spectrophotometry | in-house method PMS-07 | |
| Nitrate | Discrete analyser (DA) | in-house method DAP-03 | ||
| Phosphorus - Available (BSES) | UV-vis spectrophotometry | Rayment and Lyons 9G1 | ||
| Nitrogen | Dumas | Rayment and Lyons 7A5 | ||
| Chloride | Discrete analyser (DA) | in-house method DAP-06 | ||
| Analysis for physical and chemical characteristics | Ground waters; Irrigation and stock waters | pH | Electrometric | APHA 4500 H B and in-house method PMW-04 |
| Solids - Total dissolved (TDS) | Calculation | in-house method PMW-12D | ||
| Solids - Total suspended | Gravimetric | in-house method PMW-11 | ||
| Redox potential (EH) | Electrometric | APHA 2580 B and in-house method PMW-05 | ||
| Langelier saturation index | Calculation | in-house method PMW-12 | ||
| Dissolved oxygen (DO) | Dissolved oxygen (DO) analyser | APHA 4500 O G and in-house method PMW-02 | ||
| Hardness - Total | Calculation | in-house method PMW-12A | ||
| Conductivity | Electrometric | APHA 2510 B and in-house method PMW-03 | ||
| Colour - True | UV-vis spectrophotometry | in-house method PMW-08 | ||
| Chlorine - Free | UV-vis spectrophotometry | APHA 4500 Cl G and in-house method PMW-06 | ||
| Sodium carbonate - Residual | Calculation | in-house method PMW-12C | ||
| Alkalinity | Titration | APHA 2320 B and in-house method PMW-07 | ||
| Turbidity | Nephelometry | APHA 2130 B and in-house method PMW-01 | ||
| Sodium adsorption ratio (SAR, sodium absorption ratio) | Calculation | in-house method PMW-12 | ||
| Soils | Carbon - Organic | Dumas | Rayment and Lyons 6B3 | |
| Calcium - Exchangeable; Magnesium - Exchangeable; Potassium - Exchangeable; Sodium - Exchangeable | ICP-AES | Rayment and Lyons 15A1, 15A2, 15C1, 15D3 and in-house method ICP-06 | ||
| Carbon - Organic | UV-vis spectrophotometry | Rayment and Lyons 6A1 | ||
| pH | Electrometric | Rayment and Lyons 4A1, 4B2 and in-house method PMS-04-01, 04-02 | ||
| Salinity | Calculation | in-house method PMS-32 | ||
| Sodium adsorption ratio (SAR, sodium absorption ratio) | Calculation | in-house method ICP-11 | ||
| Phosphorus buffer index (PBI) | UV-vis spectrophotometry | in-house method PMS-12 | ||
| Aluminium - Exchangeable | ICP-AES | Rayment and Lyons 15G1 and in-house method ICP-07 | ||
| Boron | ICP-AES | Rayment and Lyons 12C2 and in-house method ICP-05 | ||
| Organic matter | Calculation | in-house method PMS-57 | ||
| Moisture | Gravimetric | AS 1289.2.1.1 and in-house method PMS-17 | ||
| Micronutrients - DTPA extractable copper; Micronutrients - DTPA extractable iron; Micronutrients - DTPA extractable manganese; Micronutrients - DTPA extractable zinc | ICP-AES | Rayment and Lyons 12A1 and in-house method ICP-08 | ||
| Phosphorus - Total | UV-vis spectrophotometry | in-house method PMS-23, Rayment and Lyons 9G1 | ||
| Conductivity | Electrometric | Rayment and Lyons 3 A1 and in-house method PMS-03 | ||
| Ammonium; Nitrogen | UV-vis spectrophotometry | in-house method PMS-37, Rayment and Lyons 7C1 | ||
| Effective cation exchange capacity (ECEC) | Calculation | in-house method PMS-15A | ||
| Relative abundance of monovalent and divalent cations (RMD) | CalculationCalculation | in-house method PMS-56 | ||
| Carbon - Total | Dumas | Rayment and Lyons 6B2b |
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Grey text appearing in a SoA is additional freetext providing further refinement or information on the data in the preceding line entry.
Accreditation No.
20956
Site No.
16871
Print date
17 Mar 2026