Specialized Food, Agricultural, and Water Testing
SANAS Accredited Laboratory

Peter Johnson Laboratories offers specialized, SANAS accredited testing services for food, agricultural, and water quality analysis. Our ISO/IEC 17025 accredited methods ensure accurate and reliable results for food safety, product authenticity, and compliance with international standards.

Testing Categories
Chilli and spice analysis at an ISO/IEC 17025 SANAS accredited laboratory – testing for food safety, authenticity, and quality assurance.
Chilli & Spice Analysis
Chilli & Spice Analysis – Ensure food safety, authenticity, and contamination-free spice products.
Spice Analysis Services
Olive oil analysis using SANAS accredited and internationally recognized AOCS test methods – testing free fatty acids, peroxide value, Delta K, K232 & K270 with a 5-7 day turnaround time.
Olive Oil Testing
Olive Oil Testing – Quality and purity testing with SANAS accredited AOCS methods.
Edible Oil Analysis Services
Patulin testing for food quality and safety – analysis of fruit pulp, fruit juice, and fruit juice concentrate at a SANAS accredited laboratory.
Patulin Testing
Patulin Testing – Detect mycotoxin contamination in fruit juice and concentrates.
Fruit Analysis Services
Water activity testing for processed meats, dairy, baked goods, spices, nuts, and packaged food products at a SANAS accredited laboratory.
Water Activity Testing
Water Activity Testing – Assess shelf stability in processed foods, dairy, baked goods, and spices.
View Analysis Range
Salt testing using SANAS accredited and internationally recognized AOCS test methods – purity assay (ex chloride), acid insoluble ash, and sulphate (SO4) analysis with a 5-7 working day turnaround.
Salt Testing
Salt Testing – Purity assay, chloride levels, acid insoluble ash, and sulphates (SO₄) analysis.
Salt Analysis Services
Sulphur Dioxide (SO₂) testing for litchis, raisins, fruit juice, and spices at a SANAS accredited laboratory – ensuring food safety and compliance.
Sulphur Dioxide (SO₂) Testing
Sulphur Dioxide (SO₂) Testing – Ensure compliance in litchis, raisins, fruit juices, and spices.
Food Analysis Services
Plant testing using pharmacopeia methods on plant materials, including Harpaoside analysis (Zeyheri and Procumbens) with a 5-7 working day turnaround at a SANAS accredited laboratory.
Plant Testing
Plant Testing – Pharmacopeia methods applied to plant materials, analyzing Harpaoside (Zeyheri and Procumbens) with a 5-7 working day turnaround.
Plant Material Analysis Services
Water testing for irrigation, boreholes, and construction using SANAS accredited APH methods at a certified laboratory.
Water Testing
Water Testing – Irrigation, boreholes, and construction water quality analysis tested using SANAS accredited and internationally recognized APH test methods.
Food Analysis Services