Interesting,
I emailed Biel asking them if it was recent and this is their reply.
Hi ##########,
The April 28, 2011 date posted on the Chartpoppers site is correct. Please contact us if you need anything else.
Thanks,
BioElectronics Corporation
4539 Metropolitan Court
Frederick, MD 21704
Office: (301) 874-4890
Fax: (301) 874-6935
E-mail: info@bielcorp.com
Web: www.bielcorp.com