164-21655 聚乙烯硫酸钾(PVSK)滴定液(N /400)日本和光Wako进口

日本WAKO和光纯药 聚乙烯硫酸钾溶液 PVSK胶体滴定液 N/400
日本和光纯药试剂(wako)   N/400聚乙烯硫酸钾  500ml/瓶  聚乙烯硫酸钾(原装)是WAKO产品之一,WAKO(和光纯药)是世界五大实验室化学试剂供应商之一

 
164-21655-聚乙烯硫酸钾(PVSK)滴定液(N /400)日本和光Wako进口
聚乙烯硫酸钾(PVSK)
CAS号:26837-42-3
产地:日本和光纯药 WAKO
包装:500ML/瓶
【用途】聚乙烯硫酸钾Potassium Polyvinyl Sulfate(PVSK)是一种简单、快速、准确的测定高分子聚合物的阴离子胶质滴定用液。利用直接滴定,进行阳离子高分子化合物的定量。于水中可形成带负电的胶体颗粒,甲基乙二醇壳聚糖滴定液-Methyl Glycol Chitosan(MGC)在酸性水溶液中带正电,利用电性中和的原理,负电胶体颗粒的会与正电胶体颗粒反应达到电性中和,在适当的pH条件下,此两种胶体可完全反应形成不溶性沉淀物,使用甲苯胺蓝Toluidine Blue(TB)为指示剂,与正电性胶体混合时,两者之间没有反应,TB维持蓝色;当悬浮液中胶体带负电时,TB会吸附于胶体表面而现紫色,滴定时,正电胶体可直接以PVSK溶液为滴定液,TB为指示剂进行滴定;对于负电荷胶体,可以直接以MGC滴定,或加入已知的过量的正电胶体,再以PVSK溶液对剩余的正电胶体进行反滴定。阳离子或碱性高分子的定量(容量分析)。
 


Wako和光纯药:Wetting Tension Test Mixture 表面湿润张力测试液,表面张力测试液
日本进口 WAKO 表面张力测试液  50ML
 



上海金牌生物科技有限公司提供Wako和光纯药:Wetting Tension Test Mixture 表面湿润张力测试液,表面张力测试液 品牌:wako 日本 规格:50ml
表面湿润张力试验用混合液(Wetting Tension Test Mixture)  ぬれ張力試験用混合液(ぬれ張力試験用)
表面湿润张力试验用混合液,用于“塑料薄膜及薄板表面湿润张力试验法”的试剂。
试验方法
用含有试剂的棉棒在试验材料(薄膜)上横向涂抹一次,必需注意涂上的混合液的量会极大影响试验的正确度。涂上试剂后2秒,判定液膜中央部分的状态。当液膜没有产生破裂时,判定为“可润湿”;产生破裂时,判定为“不可润湿”。
ぬれ張力試験用混合液 Wetting Tension Test Mixture 详细产品信息如下:
(ぬれ張力試験用)(和光纯药Wako中国:电话 152219999938 提供
货号 品名 包装
235-01791 WETTING TENSION TEST MIXTURE NO.22.6 50ML
238-01801 WETTING TENSION TEST MIXTURE NO.25.4 50ML
235-01811 WETTING TENSION TEST MIXTURE NO.27.3 50ML
232-01821 WETTING TENSION TEST MIXTURE NO.30.0 50ML
239-01831 WETTING TENSION TEST MIXTURE NO.31.0 50ML
236-01841 WETTING TENSION TEST MIXTURE NO.32.0 50ML
233-01851 WETTING TENSION TEST MIXTURE NO.33.0 50ML
230-01861 WETTING TENSION TEST MIXTURE NO.34.0 50ML
237-01871 WETTING TENSION TEST MIXTURE NO.35.0 50ML
234-01881 WETTING TENSION TEST MIXTURE NO.36.0 50ML
231-01891 WETTING TENSION TEST MIXTURE NO.37.0 50ML
234-01901 WETTING TENSION TEST MIXTURE NO.38.0 50ML
231-01911 WETTING TENSION TEST MIXTURE NO.39.0 50ML
238-01921 WETTING TENSION TEST MIXTURE NO.40.0 50ML
235-01931 WETTING TENSION TEST MIXTURE NO.41.0 50ML
232-01941 WETTING TENSION TEST MIXTURE NO.42.0 50ML
239-01951 WETTING TENSION TEST MIXTURE NO.43.0 50ML
236-01961 WETTING TENSION TEST MIXTURE NO.44.0 50ML
233-01971 WETTING TENSION TEST MIXTURE NO.45.0 50ML
230-01981 WETTING TENSION TEST MIXTURE NO.46.0 50ML
237-01991 WETTING TENSION TEST MIXTURE NO.48.0 50ML
234-02001 WETTING TENSION TEST MIXTURE NO.50.0 50ML
231-02011 WETTING TENSION TEST MIXTURE NO.52.0 50ML
235-02031 WETTING TENSION TEST MIXTURE NO.56.0 50ML
232-02041 WETTING TENSION TEST MIXTURE NO.58.0 50ML
239-02051 WETTING TENSION TEST MIXTURE NO.59.0 50ML
236-02061 WETTING TENSION TEST MIXTURE NO.60.0 50ML
233-02071 WETTING TENSION TEST MIXTURE NO.61.0 50ML
230-02081 WETTING TENSION TEST MIXTURE NO.62.0 50ML
237-02091 WETTING TENSION TEST MIXTURE NO.63.0 50ML
230-02101 WETTING TENSION TEST MIXTURE NO.64.0 50ML
234-02121 WETTING TENSION TEST MIXTURE NO.67.0 50ML
231-02131 WETTING TENSION TEST MIXTURE NO.70.0 50ML
238-02141 WETTING TENSION TEST MIXTURE NO.73.0 50ML
公司联系方式
更多产品,更多优惠,请联系我们!
上海金畔生物科技有限公司
地 址: 上海市浦东新区东靖路699弄36栋701室
邮 编: 201208
固话总机:
订货热线:15221999938
网 址:www.jinpanbio.com
金畔博客:www.jinpanbio.cn
Email:sales@jinpanbio.com
 
上海金畔生物科技有限公司(www.jinpanbio.com)提供生命科学研究领域系列产品,包括色谱标准品、生化试剂、诊断试剂、实验耗材和仪器。标准品和试剂包括APSC品牌分子质量测量标准品、德国DR品牌固体标准品、O2si品牌的液体标准品、Laysan品牌的修饰性PEG(修饰性聚乙二醇)、WAKO品牌的表面张力测试剂、WAKO品牌的日立氨基酸分析仪配套试剂-缓冲液、显色液、Lumiprobe品牌的标记分子氨基活性染料。免疫诊断试剂包括Roche品牌的酶、Abcam品牌的单克隆抗体、多克隆抗体、ELisa试剂盒、MP bio品牌的DNA提取试剂盒等多种产品。耗材和仪器包括NUSSUI品牌的培养基、HTL品牌的移液器、Reseach diets品牌的动物饲料、Labnet品牌的离心机等实验室常用仪器耗材。

不对称触媒|化学品|关东化学株式会社

弹出窗口打开

化学产品的咨询

信息查询

电话: 03 – 6214 – 1090

传真: 03 – 3241 – 1054

该文章由WP-AutoPost插件自动采集发布

原文地址:http://translate.baiducontent.com/transpage?cb=translateCallback&ie=utf8&source=url&query=http%3A%2F%2Fwww.kanto.co.jp%2Fproducts%2Fkagakuhin%2Ffuseishokubai%2Findex.html&from=jp&to=zh&token=&monLang=zh

总膳食纤维快速整合试剂盒 K-RINTDF Rapid Integrated Total Dietary Fiber Assay Kit

总膳食纤维快速整合试剂盒
英文名:Rapid Integrated Total Dietary Fiber Assay Kit
货号:K-RINTDF
规格:100 assays per kit
市场价: 4039注册登录后查看价格。

  • 应用范围:
    This test kit is suitable for the measurement and analysis of Total Dietary Fiber as per Codex Alimentarius definition, updated to be more consistent with in vivo conditions in the human small intestine, i.e. a 4 h incubation time. Under these conditions more accurate measurement of resistant starch is obtained, including phosphate cross-liked starch (RS4). Use of higher enzyme concentrations ensures that resistant maltodextrins produced from non-resistant starch under the incubation conditions of the Integrated Total Dietary Fiber procedure (AOAC Methods 2009.01 and 2011.25 are no longer produced.
    In this rapid, improved method, the incubation time with PAA + AMG is reduced to 4 h and the levels of both PAA and AMG are increased to ensure that resistant starch levels obtained with a set of control samples are consistent with ileostomy data. Under these conditions, the DF values obtained for most samples are the same as those obtained with AOAC Methods 2009.01 and 2011.25.
    The dietary fiber fractions that are measured with this method are:
    1. High Molecular Weight Dietary Fiber (HMWDF) including Insoluble Dietary Fiber (IDF) and Low Molecular Weight Soluble Dietary Fiber (SDFS; soluble dietary fiber which is soluble in the presence of 78% aqueous ethanol), or
    2. Insoluble dietary fiber (IDF), Higher Molecular Weight Soluble Dietary Fiber (SDFP; water soluble dietary fiber that precipitates in the presence of 78% aqueous ethanol) and SDFS.
    The enzymes used in this method are high purity and effectively devoid of contaminating enzymes active on other dietary fiber components such as β-glucan, pectin and arabinoxylan. They are supplied as freeze-dried powders; allowing the use of glycerol as an internal standard.
    For the determination of Total Dietary Fiber in cereal products, foodstuffs, feeds and other materials. 
    Principle:

    (Pancreatic α-amylase + amyloglucosidase)
    (1) Non-resistant starch + H2O → D-glucose
    (protease)
    (2) Protein + H2O → peptides
    (3) IDF (including resistant starch) and alcohol precipitated 
    soluble DF (SDFP) determined gravimetrically

    (4) Alcohol soluble DF (SDFS) determined by HPLC
    (5) Ash and residual protein determined on DF residues 
    and subtracted

    Kit size:                             100 assays
    Method:                              Hydrolysis/removal of non-dietary
    fibre components
    Total assay time:                ~ 3 h work (over 1-2 days)
    Detection limit:                   0.5-100% of sample weight
    Application examples: 
    Food ingredients, food products and other materials
       

    * See McCleary, B. V., Sloane, N & Draga, A. (2015). Determination of total dietary fibre and available carbohydrates: a rapid integrated procedure that simulates in vivo digestion. Starch /Starke, 66, 1-24.
    Advantages

    • More rapid measurement – incubation time with PAA + AMG reduced to 4 h in comparison with AOAC 2009.01 (increased levels of enzyme employed)
    • DF values for most samples are very similar to those obtained with AOAC Method 2009.01
    • Rapid Integrated Total Dietary Fiber method removes all of the limitations that have been identified with AOAC Method 2009.01*
    • All reagents stable for > 2 years after preparation
    • The method is consistent with the CODEX Alimentarius definition of dietary fiber
    • Mega-Calc™ software tool is available from our website for hassle-free raw dataprocessing
    • Very competitive price (cost per test)

     

     Q1. How should I prepare the required 78% ethanol solution?

    A volume reduction occurs on mixing water with 95% ethanol (or IMS). 1 L of 78% ethanol is prepared by adding 821 mL 95% ethanol (or IMS) to 207 mL H2O.
    If using a 1 L volumetric flask, this is best accomplished by placing 821 mL 95% ethanol (or IMS) into the volumetric flask. Dilute to volume with deionised water. Mix well. Check the level and if necessary add more deionised water to bring it back up to the 1 L mark.