...reducer (number DT885). The great thing about the DBC line of paint is it is always a 1:1 ratio. Depending on the temperature, you would use a different reducer. For example we used DT885, because it was close to 80 degrees in our booth. If it had been 65 degrees we would have used DT860. The number at the end of the code corresponds with the temperature in the booth. On an interesting side note, it is also possible to create your own cocktail mix of reducers based on the temperature in the booth, and if this is your first paint job, we suggest contacting PPG for the particulars of that process.