Sampling instructions

Information
The sample should be taken of what which has been circulated during normal use. If you suspect corrosion of pipes affect the water quality you should take samples of the water which has stood still in the pipes overnight.

When sampling of radon, it is particularly important that the water is well circulated in both the well and the hydrophore/lines. If the water consumption hasn't been normal in the past days you should let the water run until all the water has been circulated (pressure vessels, piping and wells) before the water sample is taken.

Preparations
- Wash hands before sampling.
- Take the sample of cold water.
- Take the sample from the kitchen faucet where the water is  used for drinking and cooking.
- Remove any low-flow strainers and nozzles that mix air into the water.
- It is important to let the water run before sampling. In that way any impurities that may be causes by dirt in the strainer or water tap. Rinse for 10-15 minutes.

Vials for chemical, metal and microbiologic analysis.

Vials for radon, chemical, metal and microbiologic analysis.

Sampling
Set sample bottles beside you. Do not unscrew all the caps at the same time, manage a bottle at a time as sampling. The microbiological test must be taken first, followed by the chemical and then radon test. Do not shut off the water flow between bottle changes.

Microbiological test
Take the plastic bottle labeled Microbiological (Mikrobiologisk) and unscrew the cap. Do not put the cap on the sink or the like when there is a risk that it might be contaminated. To prevent you from contaminating the vial of bacteria, hold it in half and do not led the bottle opening to get in touch with the crane. Fill the flask to about 80 %. Screw the cap on firmly.

Microbiological samples should be analyzed within 24 hours and must be submitted to the laboratory as soon as possible, advantageous same day that the samples are taken.

Chemical test
The sample is taken in two containers: A plastic bottle labeled Chemical (Kemisk) and a plastic tube marked Metal analysis (Metall). Fill both to the neck. Screw the cap on firmly.

Radon test (drilled well)
The sample is put into the bottle labeled Radon (a small, opaque bottle with white cap). The bottle should be filled up; it may not be formed any air pocket because radon is a gas and the air might allow the radon to transform into the air phase. To reduce aeration of the water, the vial should be kept so that the water slowly flows along the cylinder wall. Make sure the gasket inside the cap is gray - if not, turn on the gasket. Screw the cap on firmly.

Enter the sampling date and time on the label. The date and time is necessary to calculate the level of radon. Radon samples should be analyzed within four days and must be submitted to the laboratory as soon as possible.

Storage and submission
The supplied ice packs should be frozen to keep the samples cold during transport. The water should reach the laboratory the same day they are taken, no later than 12.00 o'clock (Monday-Friday).

Catarina Wernlund
Phone: +46 (0)31-65 64 93
catarina.wernlund@safecontrol.se

Sandra Johansson
Phone: +46 (0)31-65 64 88
sandra.johansson@safecontrol.se