Natural Turf

The selection of appropriate materials for construction and on-going use (e.g. topdressing) is critical to performance. NZSTI is able to analyse construction and topdressing materials through its NZ based laboratories. 

Materials Testing

The selection of appropriate materials for construction and on-going use (e.g. topdressing) is critical to performance. NZSTI is able to analyse construction and topdressing materials through its NZ based laboratories. 

The following materials testing procedures are available: 

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Trick content

Rootzone sands, topdressing sands, bunker sands, blinding sands
  • Particle size distribution 
  • Moisture release curve
  • Hydraulic conductivity
  • Calcium carbonate content 
  • pH 
  • Particle shape and colour (bunker sands) 
  • Organic matter content 
  • Sand Compatibility
Drainage gravels
  • Particle size distribution 
  • Hydraulic conductivity 
  • Calcium carbonate content 
  • Bridging coefficient 
    Rootzone and topdressing soils
    • Soil textural analysis 
    • Organic matter content 
    • Hydraulic conductivity 
    • Aggregate stability 
    • Dispersion co-efficient 
    • Stone content pH 
    • Includes testing to the NZSTI standard specification for topsoils suitable for use as topdressing on soil sportsfields. 
      Cricket soils
      • Motty test 
      • Linear shrinkage 
      • Dust/shine potential 
      • pH 
      • Organic matter content 
      • Soil textural analysis

        Pest and disease diagnostic service

        The NZSTI laboratory provides routine pest and disease analysis.   If necessary, disease and pest problems are also referred to specialist entomologists and pathologists.

        Nutrient testing

        NZSTI maintains a strategic link with Hill Laboratories Ltd, offering a complete soil test interpretation and fertiliser recommendation service from a chemical analysis of root zones, plant tissue and irrigation water. 

        Overseas samples

        NZSTI can supply an import permit for clients wishing to have overseas samples of soil, sand or gravel samples analysed. This permit is licensed under the 1993 Biosecurities Act and allows direct entry of samples into New Zealand without the need for complicated border control procedures. 

        For more information or any questions, please contact Brendan Hannan or call 027 442 8046 

        Please send samples for analysis to:

        Brendan Hannan NZSTI 

        Via Courier:  
        163 Old West Road, Palmerston North 4472 

        Or Post: 
        PO Box 347, Palmerston North Central, Palmerston North 4440