Mark sampling bag to identify sample location.

Ensure sample are is free from dust.  Some surfaces may need to be coated with a sealant before sampling or the area taped.

Remove backing paper from the self-adhesive tape in the centre of the sampling bag and, ensuring that the bag is vertical press the tape firmly on to the surface to be sampled.  Check that the adhesion is good and the bag is firmly attached.

Moisten the foam pad.

Place the drill or the core sampling tool in the centre of the foam pad and gently begin drilling or turning the sample tool.  Should the bag start to twist, stop turning or drilling; hold the foam pad firmly and rotate the drill bit or the core sampling tool until the bag is straightened.

When sufficient sample material has been loosened, withdraw the drill bit or core sampling tool from the hole, keeping them within the sampling bag.  If using a drill, tap bit gently against the surface of the material to remove any residue sample.  If using a core sampling tool, take the tommy bar and insert it through the opening in the core sampling tool, then carefully push the sample into the sampling bag.

Make sure that the sample taken goes to the bottom of the sampling bag.

Before removing the drill or core sampling tool from the sampling bag, have a damp, disposable cloth to hand as well as a piece of sealing tape.

Squeeze the foam pad around the drill bit or the core sampling tool as you remove it from the sampling bag.  At the same time be wiping the emerging drill bit or core sampling tool with the damp cloth.  Enclose the the drill bit or core sampling tool completely in the damp cloth.

Immediately seal the hole in the foam pad either with the sealing tape or by peeling off the backing paper from the self-adhesive tape on the sampling bag and then folding the bag over, sticking the tape over the hole in the foam pad. 

Thoroughly wipe the drill bit or the core sampling tool damp cloth, ensuring the interior of the core sampling tool is not neglected (if necessary, rinse it in water and dry well).

Carefully remove the sampling bag from the surface.  Some surfaces may come away when the bag is removed (see Note 2).  Seal the opening with sealing tape or by peeling off the paper on the other self-adhesive tape on the sampling bag and folding the bag over to stick the tape over the hole.

Seal the hole in the surface that has been sampled.