Why don't you contact BWE Ltd directly using the information below or by writing them directly from their web site. That way you will get a good technical answer. Then, please share the information with all of us here. Thanks.
BWE Ltd Beaver Business Park Ashford, Kent TN23 7SH England
Regards Peter J. Stewart-Hay Principal Stewart-Hay Associates www.Stewart-Hay.com 519 641- 3212
Note - A day or so later, I did contact and invite BWE to respond to this query on the web site. They did not bother.
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