Water

We offer a wide spectrum of soil services and strive to accommodate special requests to suit the unique needs of our customers. Our aim is to produce trustworthy data within the shortest turnaround times allowed by the test protocols.

NviroTek Laboratories

A multitude of laboratory tests are performed to assist with valuable decision making regarding the following:

Water Sample

Analysis Packages

General

Irrigation

pH, EC, Total Dissolved Salts, K, Ca, Mg, Na, Cl, S expressed as SO4, HCO3, CO3, P expressed as PO4, NH4, NO3, Fe, Mn, Cu, Zn, B, Al, SAR, Irrigation Class

Basic Human / Animal Consumption

Aesthetic and Operational Significance: Na, K, Zn, NH4, NO3, pH, EC, Dissolved Solids, Cl, Al, B, CO3, HCO3, Total Alkalinity, Ca, Ca Hardness, Mg, Mg Hardness, Total Hardness, P expressed as PO4.

Microbial Determinants: E.Coli, Total Coliform and Heterotrophic Plate Count

Chronic Health Significance: Fe, Mn, Cu and F

Acute Health Significance: S expressed as SO4, NO3-N and NO2-N

Global G.A.P. Assessment

Basic Human Consumption as well as: Co, Cr, Ni, V, As, Hg, Se, Cd, Pb, Sb, U, Ba

SANS 241:2015 Full analysis

Global G.A.P. Assessment as well as: Colour, Turbidity, Free Cl, Total Chlorine, Combined Chlorine, Cyanide, Trihalomethanes, Phenols, TOC

Waste water for irrigation

pH, EC, TSS, Free Cl, Soaps, oil and grease, COD, E.Coli, NH4-N, NO3-N, NO2-N, P as PO4

Waste water for river discharge

pH, EC, Ca, K, Mg, Na, SAR, COD, TSS, E.Coli, As, Cd, Cr, Hg, Pb, Co, Ni, V, Se, Sb, Al, B, Cu, Fe, Mn, Zn, Free Cl, NH4-N, NO3-N, NO2-N, F, PO4-P, Cyanide, Soaps oil grease

Additional Microbiological to SANS 241:2015

Giardia

Cryptosporidium

Microcystin

Micro Organisms

E.Coli, Total Coliform count (IDEXX Colilert® -18/Quantitray®: ISO 9308-2:2012)

Total Plate Count (IDEXX HPC for Quantitray®)

Total Coliforms, E.Coli and Total Plate Count

Single Parameters

Fluoride

Colour

Turbidity

Chlorine (Free, Total, Combined)

COD (Chemical Oxygen Demand)

pH Buffer capacity

Ryznar Stability Index (RSI) / Langelier Saturation Index (LSI) (pH, EC, ICP, HCO3)

Nitrogen Derivatives: NH4-N, NO3-N, NO2-N

ICP Elements: Ca, Mg, K, Na, Fe, Mn, Cu, Zn, B, Al, S as SO4, Mo, P as PO4, SAR

EC (Electrical Conductivity) including TDS (Total Dissolved Salts - calculated)

TSS (Total Suspended Solids - gravimetric method)

Heavy Metal Package: Co, Cr, Ni, V, As, Hg, Se, Cd, Pb, Sb, U, Ba

Si (Water-soluble Silica)

Chrome VI

General guidelines for the sampling of water for laboratory analysis
Water Sampling Instructions

Pour the ethanol, in the 4ml vial, into the bottle and shake well. Throw the ethanol out when done.

If you do not use the bottles provided by NviroTek Laboratories, a glass bottle is preferred, but a plastic bottle is suitable.

Rinse the bottle and cap, 3 times, with warm water (at least 70°C).

Rinse the bottle 3 to 5 times with the water to be sampled.

500ml water is suitable and make sure the bottle is sealed properly.

Label sample bottles clearly for the laboratory to refer back to the source.

Store the samples at room temperature, but dispatch to the laboratory as soon as possible.
Water that needs to be tested for micro-organisms must be kept cool at 4°C and be submitted to the laboratory within 24 hours.

It is imperative that the sample taken is a representation of its source and the following guidelines are to be followed:

Boreholes: Stagnant water in the system should be pumped out, to ensure that a ‘fresh’ sample is taken.

Dams: Take the sample as closely to the center of the dam as possible, at least 2m from the edge of the dam. Sample at 25 - 50cm depth.

Please note – Banks require the full land description on the report for the sale/purchase of farms, etc.