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:
Tart Cherry Cider, Belgian Tripel, AHA Summer Ale, Sonoma County Organic Cider, Maibock Bock, Ommegang Abbey Ale Clone, Belgian Golden Strong, Belgian Quad (Grand Reserve), Belgian Pale Ale, German Pils (split WLP830 & WLP838)Bottled:
Contentment (Trappist), Derangement (Belgian Dark Strong), Kranky (Kolsch v1.1), Wise One (Wit)On Deck:My Site: www.restlesscellars.com