Mailing Address: 1919 Highway 35 North, PMB# 358
Rockport, Texas 78382

The physical laboratory is located at:

  • 252 Retreat Drive
  • Rockport, Texas 78382

Send email to: to request additional information and product/service pricing.

Your interest and consideration of our expertise is appreciated, and we look forward to working with you to provide quality education, production assistance and microbiological laboratory services.

The ROI Laboratory provides quality innovative environmental microbiological research and product testing. Some areas of specialization include soil, dirt, planting media, compost, Liquid Microbial Concentrate (LMC) along with product testing for other agriculture, horticulture and home gardening products.

Robert Moore, the Managing Director of the ROI Microbiotics Laboratory is committed to provide the highest level of specifically-focused environmental laboratory services to meet client needs.

Certainly, based on test results, we can recommend a wide range of treatment conditions and options for clients to choose from.
But the ONLY treatment that matters to you, is the one that meets your needs, in the particular environment at your location, to produce a particular result - whether a local garden, agricultural harvest or livestock.
Specific applications for specific needs is the ROI focus.

Our staff will be happy to assist you with your questions and provide educational materials and activities to facilitate your understanding of the ecological balance needed for your particular crop and/or animal/earthworm propagation environment.

Services Available

Analysis of Compost

  • Stability - The degree that organic materials have been decomposed into organic matter by microbial activity
  • Maturity - Density and diversity of microbial populations by direct microscope observation.
  • Other Tests - C:N ratio, available forms of plant nutrition and a host of other tests

Analysis of 'Compost Tea'

  • Plant Nutrition - capacity to supply nutrient levels to grow plants - bio-availability, not just total nutrient presence
  • Microbial Community Strength - capacity to function as a barrier to plant diseases and pests

Analysis of Growing Mediums - conditions for plant roots

  • Testing the rhizosphere - the ability of the below-ground medium to maximize support to plants

Analysis of the growing plants - focus on harvesting

  • Fertility, disease and pest controls of the phyllosphere - the aerial surfaces of plants

Microbiological identification

  • Direct observation methods - light microscope
  • Mycorrhizal fungi hyphae and spore testing
    • Root colonization - of root samples, expressed as percentage of roots colonized by mycorrhizae
    • Spore enumeration - how many mycorrhizal spores are present per gram or milliliter of sample
    • Colonization potential - determines the number of colonizing mycorrhizal units available
    • Pathogen inhibition assay - screens products for disease suppression organisms
      • Can be used to assist in specifying application rates of compost and/or 'tea' to growing media and plants

Testing of Client products

  • May include testing for various pathogens such as E. coli, Staphylococcus, and Salmonella
  • Respirometry - measures changes in oxygen and carbon dioxide concentrations in metabolic samples
  • Soil and dirt (growing medium) analysis - ability of microorganisms to produce qualified benefits
  • Custom studies - microbial process assaying - consulting/design fees may apply
Click Here to see: Compost Containments
Click Here to see:COMPOST PILES