Me too! Just got mine today. He used to have listings on Aquabid, but those seem to have all been bought up. You can also find him here:
http://www.barrreport.com/trades-swa...standards.html
Soooo much easier now that you can just buy the reference solution. Takes any questions out of the process... Of course for all of you DIY'ers you can still do the Baking soda mix.