Compost, Mulch and Potting Mix

Composts and Mulches

The analysis of composts, soil conditioners & mulches in accordance to AS4454 specifies requirements for organic products and mixtures of organic products that are to be used to amend the physical and chemical properties of natural and artificial soils and growing media.
Groundswell’s ASPAC & NATA accredited laboratory facility offers the full suite of analysis detailed in AS4454.
Analyte Literature Reference
pH AS4454 Appendix B
Electrical conductivity AS4454 Appendix B
Ammonia AS4454 Appendix B
Nitrate AS4454 Appendix B
Soluble phosphorus AS4454 Appendix B
Organic matter AS4454  Appendix C
Organic carbon AS4454  Appendix C
Total nitrogen AS4454  Appendix C
 Metals AS4454  Appendix D
Organic contaminants AS4454  Appendix D
Wettability AS4454  Appendix E
Bioassay AS4454  Appendix F
Particle size grading AS4454  Appendix G
Total carbonate content – calcium carbonate equivalent AS4454  Appendix H
Moisture AS4454  Appendix I
Visible contamination AS4454  Appendix I
Bulk Density AS4454  Appendix J
Plant propagules AS4454  Appendix M
Nitrogen drawdown index AS4454  Appendix O
Maturity Index (Solvita ) AS4454  Appendix N
Phenoxy Acid Herbicides
Asbestos
Enteric Viruses & Helminths
Listeria AS4454  Appendix D
Salmonella AS4454  Appendix D
Faecal coliforms AS4454  Appendix D

Metals include : As, B, Cd, Cr, Cu, Hg, Ni, Pb, Se, Zn ( as detailed in AS4454, Table 3.1C ) & total P K & Na

Organic contaminants include organochlorine pesticides & PCB’s ( as detailed in AS4454 Table 3.1C )

Phenoxy acid herbicides, asbestos, enteric viruses & helminths are additional to AS4454 analytes

Potting Mix

Ensuring potting mixes of both regular & premium quality adhere to specific physical, chemical & biological requirements is essential in the marketing of these products.
Groundswell’s ASPAC & NATA accredited laboratory facility offers the full suite of analysis detailed in AS3743.
Analyte Literature Reference
Volume AS3743 Appendix A
Air-Filled Porosity AS3743 Appendix B
Wettability AS3743 Appendix C
pH AS3743 Appendix D
Electrical conductivity AS3743  Appendix D
Ammonia AS3743  Appendix D
Manganese AS3743 Appendix D
Nitrate AS3743 Appendix D
Chloride AS3743 Appendix D
Nitrogen drawdown index AS3743 Appendix E
Toxicity AS3743 Appendix F
Determination of nutrient levels AS3743 Appendix G
Water Holding Capacity

Note

Nutrient levels include : Ca, Mg, P, K, S, Fe, Mn, Zn, Cu, B & Na

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