北京绿百草科技供应BENSON有机酸分析柱BP-OA关键词:BENSON,有机酸分析柱,BP-OA,2030-0北京绿百草科技专业提供BENSON有机酸分析柱BP-OA,货号2030-0,规格250 x 4.6 mm。有机酸分析色谱柱&mdash Benson BP-OA,填料符合USP L17,8%交联度的磺化苯乙烯-二乙烯基苯树脂键合氢离子。BP-OAPH值适用范围是0-14,可用水或稀酸做提洗液。BP-OA柱子用于确定弱有机和无机酸阴离子,有机酸阴离子包括乙酸、甲酸、草酸、马来酸、苹果酸、琥珀酸、柠檬酸、酒石酸、富马酸等;无机酸阴离子包括氟化物,碳酸氢盐,硼酸盐,硅酸盐等。需要详细的产品信息货号色谱柱柱尺寸(mm)2000-0BP-OA Analytical Column300 x 7.82010-0BP-OA Analytical Column250 x 7.82020-0BP-OA Analytical Column100 x 7.82030-0BP-OA Analytical Column250 x 4.62000-2BP-OA Guard Column50 x 4.6
【产品详情】 此醋酸乙酯薄膜为复制样品表面提供了快速方便的方式,尤其是复制无法做切割处理的大样品表面。薄膜可溶解于丙酮,在丙酮中很容易变软,直接吸附于事前已用丙酮湿润的样品表面,当薄膜干燥后直接撕下来即可获得样品表面信息。复样表面喷碳后,可将薄膜溶解于丙酮中去除。喷碳后的复样可直接在TEM、及SEM中进行观察。覆膜的厚度有35um,50um及75um三个厚度可选;包装为20片/包。具体使用方法:A piece of the replica material of a size suitable to cover the area to be replicated is cut from the sheet. A drop or two of acetone is placed on to the specimen surface and the replica film immediately applied (allowing surface tension forces to pull it down no pressure is required). The film should be left to dry for about 10 minutes when it will separate very easily from any reasonably flat surface. It can then be stretched between two pieces of cellulose tape, structure side outwards, wrapped round a microscope slide, and placed in a vacuum coating unit for shadowing and carbon evaporation. The required area is cut out from the film, and laid, carbon side up, on to microscope grids on a wire mesh standing in a dish of acetone, with the acetone just touching the bottom of the mesh. After one hour, remove the grids from the mesh and wash individually in acetone before drying. 产品详细价格及资料,请登录电镜耗材在线商城网站查看。
参数:形状:球体直径0.5-0.8毫米;强度:>8 N;化学成分:二氧化硅/氧化铝的摩尔比为10 - 20;银>7%;功能:用吸附剂处理后,在醋酸溶液中的碘含量可以降低到低于10 ppb大于50 ppb的原乙酸;寿命:>300 d包装:编织袋内衬塑料袋Parameter:Shape: sphere with diameter 0.5~0.8 mmStrength: >8 NChemical Composition:Molar ratio of SiO2/Al2O3 = 10~20,Ag >7% Function: After treatment with the adsorbent, the content of iodine in acetic acid can be reduced to lower than 10 ppb from >50 ppb in raw acetic acidLife time: >300 d.Packed:Knitting bag inside lining plastic bag.