Pemulen TR1 Polymer is a versatile polymeric emulsifier, which can emulsify up to 30% oil by weight, within a pH range of 4-5.5, and up to 20% oil over the pH range of 3-11. While Pemulen TR-1 thickens the water, Carbopol polymers should be used with Pemulen® TR-1 to provide greater thickening properties where higher viscosity emulsions are required.