The R-0014 R-0004 are different reagents, and will not work interchangeably. The OTO kit in the PS 233 is just a basic OTO kit and can be bought by itself at WalMart with the proper reagents already included. It will be cheaper to get it that way than to pay shipping for the OTO reagents. Our Leslie's also sells the R-0014, if that's the only one you need.

Janet