3.3 equipment.3.2.1 bottle fermentation duren anaerobic size 2000 ml glass bottle 12 cm diameter, high 27 cm.3.2.2 magnetic bar diameter 0.8 cm long, 5.0 cm for use in agitation.3.2.3 bottle serum (serum) size 1250 ml to measure gas occurrence system instead of water.3.2.4 plastic syringe (Syringe) size 60 ml3.4 tools.3.4.1 stirring machine of heat (Hotplate available Stirrer) model C-MAG HS7 brand IKA.3.4.2 pH meter.3.4.3 sub machine COD.3.4.4 oil, total solids (Total Solid; TS).3.4.5 suspended solids (Suspended Solid; SS).3.4.6 volatile suspended solid (Volatile Suspended Solid; VSS).
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