IF you have the Leslies "Total Pool Care DPD Test Kit" service test kit made by Taylor, it is the K-2005 Taylor kit in a Leslies box (I have one because I wanted to see what it was--and it was on sale). If so, as Ben says, you only need the K-1515 Taylor kit to make it the equivalent of the K-2006, and it's much cheaper that way.

You'll still need the OTO kit Ben told you to get, but even so you'll be saving money AND having all the same functions as the K-2006.

The K-1515 is a single test: the FAS-DPD chlorine test that is the gold standard for testing chlorine levels. The DPD test is NOT the same thing.

The K-1515 should be about $20, but the full K-2006 is $50 to $70 (the Leslies re-badged version is the "Chlorine FAS-DPD Service Test Kit" for $71, which is pricey, but it IS the K-2006 in a Leslies box, if you cannot get it elsewhere)

Carl