In a suitable vessel (able to contain the entire batch), weigh water, disperse carbomer and heat to 80 C. In another vessel, weigh and disperse the remaining components of Part B and add to the batch. Weigh Part a and heat to 80 C with agitation. When proper conditions are obtained in both parts, add Part a to Part B with agitation. Avoiding aeration, mix for 10 min. Adjust pH to 6.5 with Part C and start cooling. Continue cooling with agitation to 28 C to 25 C and fill off.