I'm looking to get a pH meter to make sure my sauces preserve properly too, is this the kind of thing I'm after:
http://cgi.ebay.co.uk/Digital-Test-pH-Meter-Tester-2-Pouches-of-Calibration_W0QQitemZ320474711198QQcmdZViewItemQQptZLH_DefaultDomain_3?hash=item4a9dc8049e
?
It would be good to get...