Research has been done to study the effects of treated wetland water utilization in Sitimulyo on the making of pickled sheepskin. The treated wetland water on the making of pickled sheepskin was done by using three variable ratio of wetland water: water that is 100:0; 75:25; 50:50. Used as a comparison was control or without any additional water wetland. Skin that was used as much as 12 pieces of sheepskin divided into 4 groups and 3 pieces of leather for each treatment. Quality parameters observed include skin moisture content, salinity, pH, and organoleptic observation. From the results showed that the treated wetland water in Sitimulyo not meet the water requirements for tanning leather according to SNI 06-0649-1989 on water for vegetable leather tanning process. Pickle skin test results show that the chemical (moisture, salt and pH) and organoleptic not meet the requirements of SNI 06-3537-1994 on quality leather and test methods pickle sheep.Keywords: pickle leather, wetland water, sheepskin ABSTRAKTelah dilakukan penelitian untuk mempelajari pengaruh penggunaan air olahan wetland yang ada di Sitimulyo dalam pembuatan kulit pikel domba. Air olahan wetland dalam pembuatan kulit Pikel dilakukan dengan 3 variabel perbandingan air wetland:air bersih yaitu 100:0; 75:25; 50:50. Sebagai pembanding digunakan kontrol atau tanpa tambahan air wetland. Kulit yang digunakan sebanyak 12 lembar kulit domba dibagi dalam 4 kelompok dan 3 lembar kulit untuk masing-masing perlakuan. Parameter mutu kulit yang diamati meliputi kadar air, kadar garam, pH, serta pengamatan organoleptis. Dari hasil penelitian menunjukkan bahwa air olahan wetland yang ada di Sitimulyo belum memenuhi persyaratan air untuk penyamakan kulit sesuai SNI 06-0649-1989 mengenai air untuk proses penyamakan kulit samak nabati. Hasil uji kulit pikel menunjukkan bahwa secara kimia (kadar air, garam dan pH) dan organoleptis tidak memenuhi persyaratan SNI 06-3537-1994 mengenai mutu dan cara uji kulit pikel domba.Kata kunci: kulit pikel, air wetland, kulit domba PENDAHULUANProses penyamakan kulit adalah proses merubah kulit mentah (hide atau skin) yang bersifat labil menjadi kulit tersamak yang bersifat stabil. Proses tersebut dimaksudkan untuk mengubah sifat-sifat kulit mentah yang mudah mengalami kerusakan dan pembusukan menjadi kulit tersamak yang tahan terhadap aktifitas mikroorganisme dan pembusukan. (Purnomo, 2005). Dalam proses merubah kulit mentah menjadi kulit tersamak dilakukan dalam 3 tahapan utama yaitu proses pra penyamakan (beam house), proses penyamakan dan proses pasca penyamakan. Proses beam house adalah proses pengubahan kulit mentah sampai menjadi kulit Pikel.
Karet perapat pada katup tabung LPG (Cairan Petroleum Gas) memiliki fungsi sebagai pelindung untuk mencegah kebocoran gas. Oleh karena itu, standar untuk produk ini sangat penting dan bersifat wajib. Standar
<p>Rubber gloves are widely used for hand protection in medical, food industries, and household purposes. The Indonesian national standard (SNI) that regulates quality specifications of these products is SNI 06-1301-1989, while for international standard is ISO 20057:2017. This study aimed to assess whether or not the SNI 06-1301-1989 needs to be updated referred to ISO 20057:2017 using comparative analysis. Eight samples of rubber household gloves have tested using ISO 20057:2017 as guidance. The result treated using descriptive analysis method then SNI 06-1301-1989 and ISO 20057:2017 were being compared. The result showed that only 4 samples namely G1, G2, G3, and G8 fulfilled requirements. Based on the result, several update were recommended for SNI 06-1301-1989 following ISO 20057:2017. Specifications such as letter and number size code and whether the gloves are ambidextrous or hand specific should be on the package. A uniform finish, free from discoloration appearance also width, length and thickness dimension and pH test needs to follows ISO 20057:2017 since latex allergen is can be found. Physic test i.e. tensile strength and elongation at break at standard laboratory temperatures and humidity and tensile strength after ageing should be kept as well as liquid for immersion test while tear strength and permanent set at 200% was unnecessary.</p>
Tanning industry produces large amounts of wastewater which contains much solid particles. If left unchecked, the solids can block the pipe and damage equipments of wastewater treatment plant.Hence, the suspended fine solid must be separated from the wastewater. This engineering activity has generated screw conveyor models for wastewater filter. The specifications of the filter are screw diameter 300 mm, pitch distance 150 mm, shaft diameter 25.4 mm, screw length 1200 mm, tilt angle 25 0 , and screw actual capacity 42.237,99 kg/hour. Propulsion system comprising an inverter, 3 phase, 1 hp electric motors; and gear box. The advantages of this equipment are the effectiveness of filtering up to 90 %, easy operation and maintenance, and the filtered solid is in half dried conditions, so it is easy to store and transport.
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