Meter Reading |
Moisture Content |
Meter Label |
Colour Code |
No Movement |
0 -10% |
Safe |
Green |
0 - 1 |
10 14% |
Safe |
Green |
1 - 2 |
14 15% |
Safe |
Yellow |
2 - 3 |
15 16% |
Attention |
Orange |
3 - 4 |
16 16.5% |
Attention |
Orange |
4 - 5 |
16.5 17% |
Attention |
Orange |
5 - 6 |
17 18% |
Attention |
Orange |
6 - 7 |
18 19% |
Attention |
Dark Orange |
7 - 8 |
19 20% |
Attention |
Dark Orange |
8 - 9 |
20 22% |
Action |
Dark Orange |
9 - 10 |
22 28% |
Action |
Dark Orange |
Important : Abnormally high readings may be caused by the surface salts on newly plastered walls or by contact with metal or steel reinforcing bars, etc behind a particular surface. Readings on concrete should be interpreted with caution and should be assessed in conjunction with a physical investigation. The test meter may indicate damp conditions at very low levels of moisture on concrete.
Ask for Concrete NDT Moisture Meter (0 6%) leaflet 
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