The subject of much debate, anti-scale magnetic treatment has met a
great deal of controversy over how it works and whether it's effective.
The subject of anti-scale magnetic treatment (AMT) and other physical methods of scale suppression remain controversial and still are labeled as gadgetry in some scientific circles. The debate is understandable; for many years the positive effects well documented in trade literature have been undermined by the apparent lack of good results from laboratory tests. In addition, some manufacturers continue to promote ineffective devices (with dubious literature) for applications where no real evidence exists ? anecdotal or otherwise ? to show that they could ever, or have ever worked. However, many devices on the market have reasonably good track records, but even these have occasionally proven ineffective in certain situations.