Judul: Laju Pertumbuhan dan Kualitas Wol Domba Batur dan Domba Garut
Abstrak: Batur sheep and garut sheep have good potential of their wool utilization because both types of sheep are crossbreed between local sheep with merino sheep. Research about wool quality of local sheep is still very limited. Information about growth rate and quality of wool would be useful as a reference for the utilization and processing of wool. Parameters observed in this research consist of growth rate, staple length, fibre diametre, staple strength, and staple elongation. Wool sample taken from midside body of sheep. This experiment was conducted on a sheep farm in Garut and Banjarnegara and Physical Evaluation Laboratory, Higher School of Textille Technology Bandung. Data were analyzed using T-Test method with 2 independent samples with five replicates of each samples and the data then was processed using Minitab 16. The analysis showed significant difference in the parameters of length, diameter and fibre growth rate. Conversely, breed factor had no significantly differences to staple strength and staple elongation. Batur sheep has a characteristic and wool’s quality better than garut sheep, so that batur sheep has a more chance to develop as a wools producer
Keyword: wool quality, growth rate, garut sheep, batur sheep

Judul: Persentase Rendemen Berat Wol Domba Garut dan Domba Batur Selama Proses Pengolahan serta Kualitas Benang yang Dihasilkan
Abstrak: The wool of local sheep is still a by-product that can be used for some craft products. The aims of this research were to study the wool weight yield during the processing and to know quality of the wool yarn. Parameters were consisted of wool weight yield percentage during sorting I, washing, sorting II, carding and during spinning, and the quality of yarn, i.e, strength and elongation of the yarn. This research used the T-test analysis. There were 5 repetitions for observed wool weight yield during the process; 2 repetitions for strength and elongation of the wool yarn from garut sheep; and 5 repetitions for strength and elongation of the wool yarn from batur sheep. The results showed that percentage of wool weight yield from garut and batur sheep was not significantly different, except for the yield in spin stage that tended to be different. The yarn quality was statistically similar between two types of wool, but for the elongation they tended to be different. Sheep breed difference was not significant on wool weight yield and yarn quality. It is concluded that wool of garut sheep can be processed to make yarn, as same as wool of batur sheep.
Keyword: yarn quality, wool weight yield, garut sheep, batur sheep

Judul: Potensi metode penambahan standar titik-H untuk penentuan simultan kromium (III) dan kromium (VI):
Abstrak: Metode penambahan standar titik-H (HPSAM) telah dicoba untuk penentuan simultan Cr(III) dan Cr(VI). Campuran pereaksi kromogenik dari 2- hidroksibenzaldiminoglisina (HBIG) dan kuersetin dalam larutan miselar setiltrimetilamonium bromida digunakan untuk penentuan simultan kedua ion di atas. Metode yang digunakan didasarkan pada perbedaan absorbans dari kompleks yang terbentuk yaitu Cr(VI)-kuersetin pada dua panjang gelombang yang berbeda (558 dan 577 nm) dengan absorbans untuk Cr(III)-2-hidroksibenzaldiminoglisina konstan. Hasil dari menggunakan HPSAM pada contoh sintetik menunjukkan bahwa Cr(III) dan Cr(VI) tidak dapat ditentukan secara simultan dengan kondisi kompromi analisis yang telah ditentukan. Hal ini karena Cr(III) yang tidak terdeteksi dan persentase simpangan baku relatif Cr(VI) lebih besar dari 5%. Walaupun demikian HPSAM masih memiliki potensi untuk penentuan simultan Cr(III) dan Cr(VI) karena pada beberapa ulangan pengukuran yang dicoba, konsentrasi Cr(VI) yang ditemukan mendekati konsentrasi yang dibuat secara teoretis.
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