Acid addition should be carried out prior to sampling. An alternative if nitric acid is not available is 1 tablespoon of citric acid powder per 100ml. The acid concentration and volume added should be indicated on the request form. An air space must be left in the bottle to allow for expansion on freezing. Sample must remain frozen in transit.
Filters are available on request from the laboratory.
If mercury analysis is required please contact the laboratory to purchase an acid washed glass sample bottle and specific instructions. Send a completed water analysis request form with each sample submitted. Keep a record of your identifying numbers and sample information. Do NOT pre-rinse container with sample. Do NOT completely fill the sample container.