100 Hydrion pH Strips (0 to 6) + Testing Star San Effectiveness
Hydrion Pro Ph Strips (Ph 0.0 To 6.0). Item 9200. 100 Strips.
I use these exact pH strips to test my Star San. See: Testing Star San Effectiveness
Update: Since this post was published the price, availability or promotion has changed. Check the product page for current description, price and availability. Also: Today’s Deals on Amazon
Micro Essential Labs Hydrion Pro Ph Strips (Ph 0.0 To 6.0) Item 9200 100 Strips
Also: Star San- 32 oz | Star San Tips, Tricks and Guidelines