Waterlab (Pty) Ltd provides the following services for Solid Waste, Rock, Soil, Sludge and Mine tailings:

Geochemical Characterisation

Waste Classification

Contaminated Land

Sludge Classification

Corrosivity

Customised experiments

1. Geochemical characterisation analysis includes:

• Static Testing on rock-, tailings- and soil samples. Major cations, anions and trace elements are determined in rock or soil samples after liquid extractions are performed.
• Extractions on solids include Distilled Water, Acid Rain, TCLP, SPLP, H2SO4 and Peroxide
• Total metals in solids are determined after microwave digestion by acids by either ICP-OES or ICP-MS.
• Other rock characterisation analyses include

• Acid Base Accounting (ABA),
• Nett Acid Generation (NAG),
• Sulphur Speciation,
• Total, Organic and Inorganic Carbon
• XRF and
• XRD

• Kinetic Testing

• Humidity Cells
• Column Leach Tests

2. Waste classification according to the National norms and Standards for the Assessment of Waste for Landfill Disposal:

• Leachable Concentrations using the Australian Standard Leaching Procedure (AS4439.3) using Acetic Acid solution (TCLP), Sodium TetraborateDecahydrate solution (Borax) or Reagent Water (Distilled Water)
• Total Concentrations

• Microwave Acid Digestion for metals
• Total Fluoride and Hexavalent Chromium
• Total Cyanide

3. Contaminated Land according to the National Norms and Standards for the Remediation of Contaminated Land and Soil Quality:

• Total Concentrations for metals by Microwave Acid Digestion for Soil Screening Values (SSV)
• Organics
• Total Cyanide
• Total Anions

4. Sludge Classification according to the Guidelines for the Utilisation and Disposal of Wastewater Sludge for:

• Total Concentrations by Microwave Acid Digestion for Compulsory and Recommended metals
• Total Phosphate and Total Kjeldahl Nitrogen
• Total Solids and Volatile Solids
• Volatile Fatty Acids on sludge with 50% water
• Poly Aromatic Hydrocarbons
• Faecal Coliforms and Helminth Ova

5. Corrosivity towards concrete or metals:

• Basson Index  - Concrete
• BRE – Concrete in aggressive ground
• DIN -  50 929 Part 3 Metals

6. Customised experiments according to client specifications.