仪器。
采用浓度准确的酸和碱，在特定条件下消煮样品，再用乙醇除去可溶物质，经高温灼烧后扣除矿物质的量，所含量称粗纤维。它不是一个确切的化学实体，只是在公认强制规定的条件下测出的概略成份，其中以纤维素为主，还有少量半纤维素和木质素。
【粗纤维测定仪的注意事项】：
１、仪器由于经常与酸、碱及水接触，且仪器通有220V交流电，所以实验室插座一定要有良好的接地。
２、每次用完仪器后，应用滤纸将抽滤底座内的水吸干。
３、当坩锅在500℃的高温炉内灼烧1小时后，不要马上取出坩埚，小心炉内温度与炉外温度的温差太大极易使坩锅炸裂。
４、操作提升手柄时，注意要小心缓慢提升，与此同时要注意上下玻璃口对正，防止操作不当而造成仪器损坏。
５、当发现抽滤比较困难，建议使用真空泵抽滤，见示意图。
６、首次使用不熟悉的情况下可用蒸馏水做，然后抽掉开始做实验。
７、使用完毕仪器之后，Z好将烧瓶内酸、碱倒出，再在瓶中加自来水，将坩锅装上，将水分别加入坩锅内，然后分别抽掉，以清洗管路。
８、在得到测试结果后，为了清除坩锅砂芯中的样品残留物，应将坩锅放入30%-50%左右浓度的盐酸溶液中浸泡几个小时，然后取出用水清洗后烘干，以备下一次使用。
９、操作时候请注意安全，加酸碱时候带厚的乳胶手套和布手套，防止酸碱碰到手上。取出坩埚时候，带上布手套，小心烫伤手。
【数显粗纤维测定仪技术参数】：
型号：JOYN-CXW-6
测定对象：各种粮食、饲料、谷物、食品及其他农副产品中粗纤维的含量
测试样品数：6个/次
重复性误差：粗纤维含量在10%以下，值误差≤0.4
粗纤维含量在10%以上，相对误差≤4%
测定时间：在仪器上所需约90min（包括酸30分、碱30分，抽滤和洗涤约30分）
电源：AC220V/50HZ
功率：3.3KVA
体积：540×450×670mm
重量：28kg
1. Due to the constant contact with acid, alkali ａnd water, ａnd the instrument has 220V ac, the laboratory socket must have a good grounding.
2. After each use of the instrument, apply the filter paper to drain the water from the filter base.
3, when the crucible in 500 ℃ high temperature furnace burning after 1 hour, don＇t immediately remove the crucible, be careful in furnace temperature ａnd furnace temperature of the temperature difference is too big to make the crucible.
4. When handling the lifting handle, pay attention to the slow improvement of the handle, while paying attention to the right of the upper ａnd lower glass mouth to prevent improper operation ａnd damage the instrument.
5. When it is difficult to extract filter, it is recommended to use vacuum pump to filter ａnd see the schematic diagram.
6. Use distilled water for the first time when you are not familiar with it, ａnd then draw off to do the experiment.
After finished 7, using the instrument, it is best to the flasks acid, alkali poured out, again add tap water in the bottle, the crucible mount, adding water respectively in the crucible, ａnd then removed respectively, with washing line.
8, after get the test results, in order to remove residues in the samples, the crucible core crucible should be in the 30% - 50% concentration of hydrochloric acid solution soak for a few hours, ａnd then after drying, water washing for next time use.
9. Please pay attention to safety during operation, with thick latex gloves ａnd gloves to prevent acid ａnd alkali from touching the hands. When taking out the crucible, wear a cloth glove ａnd be careful to burn your hands.
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