Are you near a winemaking store? Most sell pH calibration solution. You can order from enartisvinquiry.com and I'm sure Amazon and eBay have it.
Something is always fermenting
...."It's Bahl Hornin'"Primary:Brite Tank/Lagering: Kegged:
Hefeweizen, Chocolate Hazelnut Porter, Kumquat Saison, Tart Cherry Cider, Belgian Tripel, Maibock Bock, Ommegang Abbey Ale Clone, Belgian Golden Strong, German Pils (WLP830)Bottled:
Belgian Quad (Grand Reserve), Derangement (Belgian Dark Strong)On Deck: My Site: www.restlesscellars.com