Silicone Defoamer Liquid, PH Value 7, Density 099

Physical state the material shall be a clear homogenous liquid at 24, 2 c, Free from visible impurities. According to your needs density 0. 89, 1. 09 1. 02 ph, > 7 7. 7 performance test a prepare 7% bentonite suspension in distilled water 7 g of bentonite, 97 ml of distilled water and age for 72 hours at 90, 2 c. Stir the suspension in hamilton beach mixer at low speed for 15 minutes and load it to 1. 30 specific gravity with barites. Passes b treat the loaded mud with 3% gypsum w/v followed by 3% w/v chrome lignosulphonate cls . Adjust the ph between 9. 0 9. 5 by adding appropriate aliquots of 5/v caustic soda solution. Stir for 30 minutes with a hemilton beach mixer with rapid velocity the brand of cls added should be so selected specific gravity of stirred mud fails below 1. 0 passes c treat this mud with 500 ppm of silicon defoamer sample. Stir for 30 seconds and determine the specific gravity of the mud. Specific gravity of the mud treated with defoamer should not be less than 1. 28 1. 28