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
Close-up of laboratory analysis of chillies and spices at Peter Johnson Laboratories, an ISO/IEC 17025 SANAS accredited facility in Cape Town. The image showcases precision testing equipment used for food safety, authenticity verification, and quality control in the spice industry.
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