Test tube brush recommended for cleaning drilled holes in concrete, brickwork and blockwork when fitting our ground anchors. This can help to improve the strength of the bond when using resin fixings, and likewise when using shield anchors (expanding bolts).
Suitable primarily for hole diameter 12mm, and (with additional push/pull strokes), for 16mm.
- Drill the hole and use the flexible tube to blow the majority of the dust out of the holes, as described in the instructions and with eye protection.
- Then, push the test tube brush into the hole until it reaches the bottom, pull it out, and repeat twice more.
- Then use the flexible tube to blow dust clear, as before.
- Repeat again with the test tube brush and with the tube until no significant amount of dust is being withdrawn.
Tip: You may find it is easier to withdraw the brush by bending the wire handle at its mid-point, or by poking a screwdriver through the 'eye' at the top of the handle. Take care not to pinch your fingers!
Beware: We provide these items to help customers using our products. We are not able to advise on compatibility and any potential advantages/disadvantages or usage issues concerning products provided by any other manufacturers.