The TF-100 uses all Taylor brand reagents, it is very similar to the K-2006, but I think lacks the seldom needed acid demand test. The key difference is the TF-100 gives you larger bottles of the reagents you use the most, not matching size bottles for all.
Lets take the FAS-DPD chlorine drop test as an example:
On both test kits you can measure in .5 ppm increments using a 10 ml sample (this is in the extended instructions for the K-2006 where the standard instructions show using a 25 ml sample and .2 ppm increments, which tends to waste reagent and is higher resolution than usually needed)
This test involves using a small "scoop" of R-0870 powder, then drop counting R-0871 with each drop counting for .5 ppm of chlorine, in this case FC, then adding 5 drops of R-0003 for the CC part of the test, then more R-0871 with each drop counting for .5 ppm of CC this time.
On the K-2006 you have the same size 22 ml bottle for R-0871 and for R-0003, on the standard TF-100 you get a 22ml bottle of R-0003 and a 60 ml bottle of R-0871
Ike
p.s. from a consumer shelf display box point of view all those matching size bottles in the K-2006 probablys looks neater, but is really less practical
