Yes, you have to order kits or refills from other sources. Two that work very well are Leslies on-line (they are far better than the retail stores for this) or TaylorTechnologies.com.

Leslies has a straight FAS-DPD test kit--that's all it tests is FC and CC but it's the Taylor test Ben used for years and it's good to at least 50ppm. This single test is about a $20 item, and it's the best $20 you can spend! You can get refills from them too--somewhere we've stickied the list of substitutes if you have Ben's later kits. The earlier ones used the straight Taylor codes.