During sampling, do not to rinse out or spill preservatives.
Avoid cross-contaminating bottles (e.g. nitric acid used for metals can contaminate nitrate analysis).
Some tests must minimise exposure to air to avoid analyte losses.
If tests require the addition of preservatives prior to sampling, contact us beforehand to facilitate supply of appropriate containers.
Many of the preservatives are hazardous chemicals (e.g. strong acids, alkaline solutions). They must be handled with care and we recommend you wear safety glasses and gloves.
For product water, please supply (as would be delivered to the consumer) at least 15 L in sealed containers all with the same packing date or use by date. If pack size is greater than 15 L, please supply one unit as a sealed package. Do not split or sub-sample bulk containers.