The required sample volume is at least 0.5 liters. We recommend taking the sample in a clean, non-carbonated mineral water bottle that has been rinsed several times with the sample, filled to the brim. The maximum storage time of the sample (from sampling to testing) is 1 hour, but it is advisable to take the water sample immediately before leaving for our store and store it refrigerated - for reliable results.

Please deliver the water samples to the store by 12:00 every Wednesday.