<![CDATA[The purpose of this research is to study depletion on goat skin in the deliming process. The experiment was conducted using (NH4)2SO4 (ammonium sulfate) as deliming agent and using a jar test tool. Tests performed on pelt and liquid characters during the deliming process; pelt weight, pelt thickness, pH and contain nitrogen and sulfide of deliming liquid. Variations made of use (NH4)2SO4 is; 0, ½, 1.0, 1½, 2 and 2½ gr for 50gr of pelt. The results showed that the use of 1 gr (NH4)2SO4 decreases the pH of the liquid deliming pelt Ca(OH)2 from 11.0 to 8.9. Changes in the weight and thickness of pelt Ca(OH)2 in the use of 1gr (NH4)2SO4 are; 11% and 53% respectively. The use of 1gr (NH4)2SO4 and will produce the fastest rate in weight and thickness of pelt Ca(OH)2, namely each; 0.008% weight / minute and 0.02% thick / minute. In addition to 1gr (NH4)2SO4, the deliming liquid of pelt Ca (OH)2 has a final pH of 8.9 and from pelt NaOH has a final pH of 9.12. Pelt Ca(OH)2 on the use of 1gr (NH4)2SO4 has 13% compression and pelt NaOH on the use of 1.5gr (NH4) 2SO4 has compression 8.8%. The greater use of (NH4)2SO4 will produce fluid deliming with character greater nitrogen and sufide levels, except the lower sulfide levels for pelt Ca (OH)2 sulfide.]]>
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