变色酸二钠

产品名称货号包装说明变色硅胶CN05051100克/瓶装在元素仪吸收管中吸附反应气或载气中的水CN05052500克/瓶装在元素仪吸收管中吸附反应气或载气中的水分子筛CN05041100克/瓶硫酸铜3382210050克/瓶

变色硅胶 Silica Gel Plus Indicator变色硅胶　货号：CN05051　　变色硅胶　参照货号：33840035变色硅胶　粒度：2-4mm　　　变色硅胶　包装：100克/瓶产品介绍：　　 变色硅胶装在元素仪吸收管中吸附反应气或载气中的水。分子筛 Molekular sieve分子筛　货号：CN05041　 　分子筛　参照货号： 33801801分子筛　粒度：1-2.5mm 　分子筛　包装：100克/瓶产品简介：　　3A分子筛装在元素仪吸收管中吸附反应气或载气中的水。

用于评估色牢度测试中的变色，以满足AATCC标准。

JY变色脱氧管利用化学反应实现脱氧。 产品型号JY变色脱氧管技术参数1、原理：化学反应2、气体：N2、H2、C2H4、Ar、He3、温度：室温4、深度：O20.01ppm5、脱出杂质量：1.5L O26、流量：5L/min7、色变：绿色变为褐色产品规格尺寸：?25mm×250mm

用于评估色牢度测试中的变色，以符合ISO标准。

变色硅胶 Silica Gel Plus Indicator变色硅胶　货号：CN05051　　变色硅胶　参照货号：33840035变色硅胶　粒度：2-4mm　　　变色硅胶　包装：100克/瓶产品介绍：　　 变色硅胶装在元素仪吸收管中吸附反应气或载气中的水。分子筛 Molekular sieve分子筛　货号：CN05041　 　分子筛　参照货号： 33801801分子筛　粒度：1-2.5mm 　分子筛　包装：100克/瓶产品简介：　　3A分子筛装在元素仪吸收管中吸附反应气或载气中的水。

JAMES HEAL 欧标沾色灰卡，欧标变色灰卡产品名称：英国JAMES HEAL 变色灰卡 沾色用灰卡 简介：GREY SCALE FOR ASSESSING CHANGE IN COLOUR ISO 105 A02:1993BS EN 20105 A02:1995用于评估色牢度测试中的变色，分1-5级，半级递增，装于包装套内。英国JAMES HEAL 企业" ISO标准沾色灰卡、变色灰卡符合标准：BS EN ISO 105 A02， 20105 A02， M&S， NEXT， ADIDAS， TM5， SM1 使用注意事项:1. 保持灰卡清洁。2. 应经常检查灰卡上是否有手指等印记。3. 如果发现印记已对评级产生干扰，必须更换灰卡。 4. 尽量避免触摸而产生的机械损伤。5. 如果机械损伤对评级产生干扰，应更换之。6. 灰卡用完后，将其装入套内!

变色灰卡,沾色灰卡SDC 变色灰卡该灰卡由九对无光的中性灰色小片组成，显示可分辨的色差。提供对应的牢度等级，即5、4-5、4、3-4、3、2-3、2、1-2和1。它用于对ISO 105-A02所描述的色牢度测试中发生的变色进行评估。在光牢度标准使用中对光牢度测试进行分级时也非常重要。SDC 沾色灰卡该灰卡由九对无光的白色小片组成，显示可分辨的染色深度。提供对应的牢度等级，即5、4-5、4、3-4、3、2-3、2、1-2和1。它用于评估在牢度测试期间发生在贴衬未染色织物上的染色的总量。其使用方法已在ISO 105-A03中有描述。灰卡适用领域:由于采用了国际标准ISO、美国标准AATCC和我国国家标准GB所规定的色度学数据标准对灰卡进行标定，所以使用该灰卡评定出的色牢度等级，同国际一致。灰卡适用于GB、ISO、AATCC、DIN、BS、JIS、EN标准中的纺织品色牢度评级 灰卡使用注意事项: 1.保持灰卡清洁。2.应经常检查灰卡上是否有手指等印记。3.如果发现印记已对评级产生干扰，必须更换灰卡。4.尽量避免触摸而产生的机械损伤。5.如果机械损伤对评级产生干扰，应更换之。6.灰卡用完后，将其装入套内。

玫棕酸二钠 indicator for sulfate titration

变色吸收剂 SA33837530 25g/瓶Chromosorb w/aw| 0.025 kg OEM equivalent parts:Costech 021018Eurovector E10504Gerhardt 14-0022 / 7724Hekatech HE33851825Sercon C1001005 / SC0024Thermo 338 37530Velp A00000148

一 产品简介我公司采用采用我公司独有的相变蓄冷材料提供冷源，应用低温变色指示技术，独创性的推出冷冻&PCR低温指示冰盒，能满足您0℃、－21℃等多种工作环境温度要求，PCR-Cooler与IsoTherm-System双面集成设计；是您保护、运输和储存敏感样品，安全地终止反应的Z佳选择。二 产品功能与用途适用于分子生物学中快速和重复的冷冻生物样品，如DNA/RNA的醇沉淀，是您保护、运输和储存敏感样品，安全地终止反应的Z佳选择。用于冰浴、转移和储藏深度冻存的样品，可用来防止酶的失活、PCR样品制备、样品转移和冷冻样品的缓慢解冻PCR-Cooler与IsoTherm-System双面集成设计，可放置96个0.2ml/0.5ml离心管或者PCR管,或者放置24个1.5ml/2.0ml微量离心管，大大节省空间，提高使用效率，降低购买成本。无需在冰浴中融化，减少发生污染风险冰盒能有效地冷却样品，并在较长时间内将温度保持在0℃、－21℃等温度状态长达3小时。当温度超过7℃时冰盒瓶盖颜色从蓝色变成白色，可根据温度的变化显示不同的颜色,让您更加直观的"看到"冰盒温度，容易操作、节省空间，而且无污染特殊设计的孔型可以避免样品冻结。三 订购与使用注意事项请提供您需要的产品温度，标准产品有0℃、－21℃两种型号，也可定制其他温度需求的冷冻&PCR低温指示冰盒产品。使用请在-20℃以下的冰箱中冷冻。当冷冻&PCR低温指示冰盒瓶盖颜色从蓝色变成白色，说明冷冻&PCR低温指示冰盒的温度已经超过7℃的Z大限度。 广州辰现科技有限公司以“专业品质，精益求精”为宗旨，以“科技优先、以人为本、诚实守信”为经营理念，以 “服务客户、满意客户、提升客户” 为目标,产品以品质好，服务好博得众合作伙伴的好评，从而得到各商家的合作支持，形成了一个良好的销售环境。 公司成立至今，一直以客户需求为导向，尊重人才，不断提升自身实力及水平，提高服务水平及质量。我们充分发挥团队的合作能力，追求永续经营, 创建好品质的产品。公司将为客户提供更加满意的产品及服务而努力。我们坚信：服务品质和良好的客户关系是公司赖以生存和发展的根本。我们与客户的合作，不在于短期利益，而是以品质赢得共同进步！真诚期望与您携手并进，共创未来！

柠檬酸/碳酸氢钠提取管（4g硫酸镁，1g氯化钠，0.5g柠檬酸钠二元1.5水合物,1g柠檬酸钠三元二水合物） 12ml离心管，50根/包 适用于萃取 ~10g 食品/农产品样品。使用柠檬酸盐将提取液缓冲到 pH 5.0 - 5.5。在该 pH 值下，大部分酸和碱不稳定性农药均能保持稳定。使用碳酸氢钠进一步稳定酸不稳定性农药。 分散固相萃取（DSPE），通常被称为&ldquo QuEChERS&rdquo ，方法快速，简便，廉价，有效，耐用，安全，是一个新兴的样品制备技术，该方法使用散装固相萃取吸附剂提取和净化食品、农产品等样品用于农药残留分析，由于其操作简便正日趋普及。 使用QuEChERS方法，首先将食品和农产品样品加入到提取管中，提取管中装有 预先精确称量的高含量盐（如氯化钠和硫酸镁）和缓冲试剂（如柠檬酸盐），盐和缓冲试剂可以促进两相分离和稳定住遇酸碱容易变化的农药，然后在提取管中加入水溶性溶剂（如乙腈）进行提取。将提取管进行震荡和离心后取出部分有机相层加到分散SPE（dSPE）净化管中做进一步处理。分散SPE（dSPE）净化管不同于传统的SPE小柱，它是将精确称量好的SPE填料如Supelclean PSA，ENVI-Carb，Discovery DSC-18和Supel&trade QuE Z-Sep混合在一起的离心管，在净化管中加入提取液，样品在提取液和散装SPE填料之间进行分配或吸附，从而实现对基质样品的净化。这种方法简便快速。净化后的样品经过震荡离心后，上清液可直接或经过简单处理后进入到下一步分析中。 Supelco除了提供一系列预装好填料的分散SPE提取管和净化管用于欧盟EN 15662和美国AOCO2007.01方法，还可以根据用户定制不同规格的分散SPE产品

氯膦酸二钠胶囊的测定，推荐阴离子交换色谱柱 IonPac AS11-HC 关键词：氯膦酸二钠胶囊，阴离子交换色谱柱，北京绿百草，中国药典 2010年中国药典标准：氯膦酸二钠色谱条件：照离子色谱法（附录Ⅴ J）测定，用阴离子交换色谱柱（推荐使用IonPac AS11-HC，或效能相当），以氢氧化钾溶液为流动相，检测器为电导检测器，检测方式为抑制电导检测；理论板数按氯膦酸二钠峰计算不低于2000.（中国药典二部P1035） 需要详细的药典标准请联系北京绿百草：010-51659766. 登录网站获得更多产品信息: www.greenherbs.com.cn

产品信息：快速气体检测管系列检测范围5 - 10 ppm10-100 ppm100-250 ppm抽气次数421修正系数1/212.5取样时间45 秒钟/次检测限度1 ppm (n=4)颜色变色白色 → 褐色反应原理CH3CO2CH:CH2+C6H3(CH3)3+ H2S2O7 → 缩聚物（褐色）误差15% ( 10-20 ppm), 10% ( 20 -100 ppm)有效期3 年温湿度校正不需校正阴凉干燥处保存干扰及影响物质浓度影响本身变化醛类+褐色酮类+褐色乙烯≥ 1000 ppm+黄色氯乙烯≥ 500 ppm+黄色订货信息：被检物质型号及名称检测范围抽气次数颜色变化保存期限(年)备注乙酸乙烯酯CH3CO2CH=CH2143乙酸乙烯酯 100-2501白色→棕色3双管 抽2次时直接读数10-10025-104

碳酸钾钠 GR for analysis

碳酸钾钠 GR for analysis

甲酚那酸含量及其有关物质测定 PEG-20M 关键词：甲酚那酸，铜，2，3-二甲基苯胺，有关物质， 2010年中国药典标准：甲酚那酸是解热镇痛非甾体抗炎药，测定其有关物质，照高效液相色谱法（附录 V D）测定，用十八烷基硅烷键合硅胶为填充剂，以磷酸二氢铵溶液-乙腈-四氢呋喃为流动相，检测波长为254nm，理论踏板数按甲酚那酸峰计算不低于5000. 测定2，3-二甲基苯胺，超气相色谱法（附录 V E）试验，以聚乙二醇（PEG-20M）为固定液的毛细管色谱柱，对照品采用恒温150℃维持至2，3-二甲基苯胺峰出峰后。（药典二部 P140） 需要详细的药典标准请联系北京绿百草：010-51659766. 登录网站获得更多产品信息: www.greenherbs.com.cn

Shim-pack AMINO-NA AMINO NA 6.0mmx100mm氨基酸分析专用色谱柱。聚苯乙烯基质，Na型磺酸基固定相，适合氨基酸分析。提示：由于产品导入时候，产品粒径、内径、长度、PH值范围、耐温范围、压力上限等技术参数可能有误，准确的参数，请确认需要采购的产品货号后，联系我司。此处参数仅作为参考，不作为产品实际的参数，给各位带来不便，请谅解。

DNAPac PA200 寡核苷酸柱使用 Thermo Scientific DNAPac PA200 寡核苷酸柱，可实现对合成型寡核苷酸进行高分离度分析和纯化所需的强阴离子交换。描述可对寡核苷酸进行 n、n-1 分离解析次级结构的寡核苷酸分析硫代磷酸酯纯度通过调节洗脱液 pH、盐和溶剂来进行选择性控制可解析具有不同于正常 SSRNA 的异常链 (2' – 5' ) 的 RNADNAPac PA200 寡核苷酸柱订货信息：RSLC 分析柱DNAPac PA200 RS, 4μm,Fast Analytical Column (4.6 x 50 mm)082508DNAPac PA200 RS, 4μm, Analytical (4.6 x 150 mm)082509DNAPac PA200 RS, 4μm,High Resolution Analytical Column (4.6 x 250 mm)082510分析柱DNAPac PA200, 8μm, Analytical (2 x 250 mm)063425DNAPac PA200, 8μm, Analytical Column (4 x 250 mm)063000DNAPac PA200, 8μm, Analytical (9 x 250 mm)063421DNAPac PA200, 8μm, Semi-Preparative (22 x 250 mm)SP6734保护柱DNAPac PA200, 8μm, Guard (2 x 50 mm)063423DNAPac PA200, 8μm, Guard Column (4 x 50 mm)062998DNAPac PA200, 8μm, Guard (9 x 50 mm)063419DNAPac PA200, 8μm, Guard (22 x 50 mm)SP6731Ultrahigh-Resolution Separations of OligonucleotidesThe Thermo Scientific™ DNAPac™ PA200 and PA200 RS are strong anion-exchange columns developed to provide unsurpassed high-resolution analysis and purification of synthetic oligonucleotides. Both supports are designed to resolve full length from n–1, n+1, and other failure sequences not possible with other columns. Retention times and selectivity can be controlled by choice of salt, pH, and solvent. Therefore, the separation can be tailored to the requirements of many different oligonucleotide analysis challenges. Achieve n, n-1 resolution for oligonucleotides.Resolve oligonuleotide linkage and stereoisomers.Assay phosphorothioate purity.Attain selectivity control with eluent pH, salt, and solvent.Resolve RNA with aberrant (2’–5’) links from normal SSRNA.The DNAPac PA200 is packed with a pellicular anion-exchange resin composed of an 8 μm diameter nonporous polymeric substrate to which quaternary amine-functionalized Thermo Scientific™ Dionex™ MicroBeads™ are bound. The rapid mass transport characteristics of this resin result in high-resolution oligonucleotide separations. The DNAPac PA200 RS is smaller, with 4 μm diameter resin for bio-UHPLC separations. These rapid separation (RS) columns are designed for use with the Thermo Scientific™ Dionex™ UltiMate™ 3000 BioRS system, with an operational backpressure limit of 10,000 psi. Columns packed with smaller particles improve resolution and offer better performance.The DNAPac PA200 and PA 200 RS can be operated under denaturing conditions, such as high temperature (up to 85 °C), high-pH eluents (up to pH 12.5), or by the inclusion of chaotropic agents (such as Urea).These columns offer the highest-quality phase stability over a broad pH range, deliver exceptional resolution, and support high-throughput separations. DNAPac PA200 and PA 200 RS columns support resolution of normal-length oligonucleotides (8- to 30- mer), extended-length oligonucleotides (30- to 70-mer), linear double-stranded DNA, and supercoiled versus nicked/linear DNA.Analytical separations on the DNAPac PA200, 8μm, 4 mm diameter column can be scaled directly to larger diameter columns so preparative methods can be conveniently developed using small samples. Scaling the flow rate and sample size up for the 9 × 250 mm and 22 × 250 mm column yields essentially identical chromatography.Column SpecificationsDNAPac PA 200DNAPac PA 200 RSColumn Chemistry55% crosslinked nonporous polymer with Quaternary amine functionalized latex MicroBeadsParticle Size8 μm4 μmIon Exchange Capacity~ 14 μeq/mL~ 20 μeq/mLpH Range4 to 10 (12.5 with salt, see manual)Pressure Maximum4,000 psi10,000 psiTemperature rangeRecommended operating temperature: Controlled ambient Temperature limit: 85 °CFlow RatesRecommend 0.1 to 1.5 mL/minOrganic Solvent Limit100% acetonitrile or methanol for cleaningTypical EluentsHigh purity water (18 megohm-cm), sodium chloride, sodium perchlorate, buffers, sodium acetate and sodium hydroxide.Detergent CompatibilityCompatible with nonioinic, cationic or zwitterionic detergents.Resolution of oligonucleotides using DNAPac PA200 column (8μm). Separation of oligonucleotides by length using DNAPac PA200 column (8μm). Influence of pH on Oligonucleotide Retention: NaCl Eluent ±20% CH3CN. Improved Stability to Alkaline Conditions: Comparison of Capacity upon Exposure to pH 12.4 at Elevated Temperature. Improved oligonucleotide sensitivity using the 4μm DNAPac PA200 RS column.Fast separation of 46 oligonucleotides using the4μm, DNAPac PA200 RS column. Comparison of 4μm, DNAPac PA200 RS column throughput. Separation of three identical sequence oligonucleotides harboring zero, one, or two 2' ,5' -linkages using the 4μm, DNAPac PA200 RS columns of different lengths. Product Data SheetsDNAPac PA200 Column Data SheetGuidesDNAPac PA200 Analytical Column ManualDNAPac PA200 RS 4μm Columns Quick StartApplicationsAN 21093: Ultra-High-Resolution Separation of Oligonucleotides on Pellicular Anion-Exchange UHPLC ColumnsAN 20996: High-Resolution Separation of Oligonucleotides on a Pellicular Anion-Exchange ColumnAN 1021: Pellicular Anion-Exchange Oligonucleotide Chromatography Coupled with High-Resolution Accurate Mass (HRAM) Mass SpectrometryAN 162: Determination of Nucleotides by Ion Chromatography with UV Absorbance DetectionArticlesHigh-Resolution Nucleic Acid Separations by High-Performance Liquid ChromatographyPostersPerformance Improvements for High Resolution Anion-Exchange Oligonucleotide Separations Using Small Particle SubstratesChromatographic Assessment of Oligonucleotide PurityIdentification of RNA Linkage Isomers by Anion-Exchange Purification with ESI-MS of Automatically-Desalted Phosphodiesterase-II DigestsHigh-Resolution RNA and DNA Analyses by Anion-Exchange Liquid Chromatography-Mass SpectrometryImplementing Novel Technologies in Diagnostic and Therapeutic Oligonucleotide DevelopmentOn-Line Preparation of Anion-Exchange Separated Oligonucleotides for Mass SpectrometryHigh-speed, High-resolution Oligonucleotide Separations UsingSmall Particle Anion-Exchangers

DNASwift SAX-1S 寡核苷酸柱 将一根强阴离子交换柱与可提供超高分辨率的 Thermo Scientific™ DNASwift™ SAX-1S 寡核苷酸柱联合使用，可对寡核苷酸进行纯化。 描述载量超高，从而可达到超高产量和高纯度选择性经过改良，可通过阴离子交换色谱进行实验室规模的高分辨率寡核苷酸纯化与高 pH、溶剂和高温相容具有压力和化学稳定性的整体柱支架采用官能团化乳胶纳米微珠进行包被 DNASwift SAX-1S 寡核苷酸柱订货信息：分析柱DNASwift SAX-1S Monolith Column (5 x 150 mm)066766 The DNASwift™ SAX-1S is a strong anion-exchange column that provides exceptionally high resolution for the purification of oligonucleotides. The exceptionally high resolution provides superior purity and yields compared to other ion-exchange or reversed-phase columns available. The DNASwift column is ideal for therapeutic and diagnostic research, which have very high purity and yield oligonucleotides purification requirements.Highest resolution for oligonucleotide purification available, providing high purity and yields.Exceptionally high capacity provides exceptionally high yields with high purity.Refined selectivity, as with the DNAPac® column, for high resolutionCompatible with high pH, solvents, and high temperatures.The DNASwift monolith column is specifically designed to provide exceptionally high resolution, laboratory-scale purification of oligonucleotides by anion-exchange chromatography. The use of oligonucleotides in therapeutic and diagnostic research is rapidly expanding. Oligonucleotides for these areas of research must be of the highest purity. DNASwift monolith columns provide high resolution and capacity, resulting in superior purity and yield compared to other ion-exchange and revered-phase columns available.The DNASwift column is a unique porous polymer monolith specifically designed for superior performance in oligonucleotide purification. The column is a pressure and chemically stable monolith support coated with functionalized latex nanobeads. These latex nanobeads, beads with strong anion-exchange functional groups, optimized for oligonucleotide separations, are similar to those of the industry leading DNAPac columns. Similarly, the nanobeads contribute to the DNASwift column' s exceptionally high resolution and selectivity control. The monolith, a polymer cylinder with interconnected flow through channels, provides fast mass transfer which contributes to the exceptionally high resolution of the DNASwift column. The porous monolith also offers low back pressure, allowing increased flow rates with minimal loss of resolution. The combination of functionalized latex nanobeads and monolith technology results in the DNASwift column having very high capacity, exceptionally high resolution, and refined selectivity control, which results in superior purity and yield of full length oligonucleotide products purified from crude oligonucleotide samples. This makes the DNASwift column ideal for oligonucleotide, therapeutic, and diagnostic research. Additionally, it provides DNASwift columns with the capability to successfully purify difficult oligonucleotide products.DNASwift SAX-1S SpecificationsSurface chemistryQuaternary amineColumn dimension5 × 150 mmBase matrixPolymethacrylateOligonucleotide binding capacity~20 mg/mL 20-merTotal binding capacity per column~50 mg 20-merBed height130 mmBed volume2.5 mLpH Range6–12.4 for operation 2–14 for cleaning NOTE: [Salt]≥Equimolar to [NaOH] requiredRecommended Ffow rate0.5–2.5 mL/min Maximum flow rate3 mL/minOperating column pressure≤ 1500 psi 10.3 MPaMaximum operating temperature85 °CSolvent compatibilityMost common organic solvents (e.g., CH3CN, CH3OH)Product Data SheetsDNASwift Monolith Column for Oligonucleotide Purification Data SheetGuidesDNASwift Monolithic Column for Oligonucleotide Purification Product Manual

搭配信息起：FILTER FUNNELS buchner一、概况及用途：该仪器采用砂芯料玻璃粉，用模型压制成各种规格和不同孔径的微孔砂芯滤板，然后在灯工上与事先制妥的玻璃外壳焊接而成，它适用于制药工业、生物制品厂、化工等单位的实验室对容量较大的溶液过滤，微孔较细的6 #砂芯漏斗又称细菌漏斗，对一些热敏性药物，遇热会分解变质的生化试剂，不能用加热方法灭菌的，则可采用过滤方法进行除菌。二造型及原理：它是一只具有砂芯滤片的锥形漏斗，砂芯滤片是代替滤纸，可以重复多次使用，砂芯号码计有1一6号，以适应阻细的需要，它们的使用范围，详见砂芯滤器的说明，容量自2ml起至6000ml供使用单位选择。其原理：参照坩埚式滤器。三使用方法：本器使用时，通常是在过滤瓶和抽气泵的配合下把瓶内空气排出，漏斗内的溶液即能被滤出，1-3#砂芯，由于微孔孔径较阻可以在常压下自然过滤。尚有一种使用方法，把漏斗与一只上下咀过滤瓶的瓶口用橡皮管连接，放入溶液中下咀用橡皮管和夹子夹住，抽气泵与上咀连接，在抽气泵的减压作用下，被过滤的液体经漏斗滤片从连接橡皮管进入过滤瓶内。待适当时溶液可从过滤瓶的下口放出，此法适用于滤除容量较大的液体。要注意不能用来过滤氢氟酸、 热浓磷酸 ： 碱。 等，因这些溶液会对砂芯产生溶解使滤孔孑径扩大，造成滤板损坏，保管贮存中要注意清洁干燥， 以免砂芯滤片发霉变色。搭配信息止

15LGastec便携式气体检测管三氯乙酸检测管（CCl3COOH）被检物质和化学式检测管型号和名称　抽气颜色变化保存备注　检测范围次数期限管理范围(ppm)(n)检测前检测后(年)(ppm)三氯乙酸15L硝酸1-37.51黄色紫色3HCCl3COOH，Gastec便携式气体检测管三氯乙酸检测管(CCl3COOH) 15LGastec便携式气体检测管三氯乙酸检测管（CCl3COOH）的详细介绍 15LGastec便携式气体检测管三氯乙酸检测管（CCl3COOH）被检物质和化学式检测管型号和名称　抽气颜色变化保存备注　检测范围次数期限管理范围(ppm)(n)检测前检测后(年)(ppm)三氯乙酸15L硝酸1-37.51黄色紫色3HCCl3COOH，Gastec便携式气体检测管三氯乙酸检测管(CCl3COOH) Gastec便携式气体检测管三氯乙酸检测管（CCl3COOH）的详细介绍： 被检物质和化学式 检测管型号和名称 　 抽气 颜色变化 保存 备注 　 检测范围 次数 期限 管理范围 （ppm） （n） 检测前 检测后 （年） （ppm） 三氯乙酸 15L 硝酸 1-37.5 1 黄色 紫色 3 H CCl3COOH 　 　 　 　 　 　 　 　 T：需要温度校正 H：需要湿度校正 +：双管 ++：9支管 *：冷藏储存 气体检测管，迅速、简单、准确地对所有气体进行检测和测定的直读式气体检测管。 直读式气体检测管 检测管式气体检测器是由检测管和气体采集器两部分构成。在一定直径的玻璃管内紧密地装填检测剂，将两端密封，然后在玻璃管表面印制表示浓度的刻度，就制成了一支检测管。在对检测目标气体进行检测时，先将检测管两端切断，通过采集器将一定量需要检测的气体抽入检测管内，检测管内就会立刻与检测试剂发生反应，并出现颜色的变化。通过变化层所在的相应位置，读取该气体的浓度。 检测试剂是通过在硅胶或氧化铝等物质表面附着显色试剂的方法制成的。显色试剂遇到被检测气体时会发生特定的反应，而且这种检测试剂具有相当的稳定性。 反应可分为两种，一种是被检测气体与检测试剂直接发生反应，产生变色。另一种是将被测气体转变为其他气体，转变后的气体再与检测试剂反应，产生变色。

醋酸纤维（CA）针头过滤器MS醋酸纤维素针头过滤器适合过滤水溶液。醋酸纤维素结合了高流速、热稳定性、低吸收等特点。特别是0.22μm孔径的醋酸纤维膜完全适合水溶液的过滤和其他液体材质的过滤。产品特征：具有亲水性的过滤膜较低的蛋白粘合性，适合水溶液处理无硝酸盐，适合地下水的过滤统一的孔径结构；广泛的孔径选择；保留颗粒细胞的收集产品用途：水溶液及有机溶剂的过滤轻散射测量细胞过滤除菌过滤订货信息： 醋酸纤维针头过滤器 CA货号孔径（μm）直径（mm）包装（只/包）SFCA013022NA0.2213100SFCA013045NA0.4513100SFCA025022NA0.2225100SFCA025045NA0.4525100

Nalgene 5929 试管架，聚碳酸酯?其上的手柄使携带更加方便。其上的孔旁标有模制数字和字母，以便于用户识别试管。清空后，可与任何相同长度的试管架叠放在一起。不会在水槽中漂浮。如果对其进行高温高压灭菌，时间长了强度就会降低。可高温高压灭菌订货信息：Nalgene 5929 试管架，聚碳酸酯目录编号 5929-0016-0020-0030试管直径，mm13-1616-2025-30阵列4×104×103×8大小 L×W，cm28.5×11.528.5×11.532×11.5每盒数量111每箱数量444

Nalgene 5050 存储盒，聚碳酸酯?坚固耐用，带有透明盒盖，可用于在存储区、冰箱以及机械冷冻装置(-196℃至+121℃ ) 中存储各种不同大小的管瓶、瓶和袋。请确保检查所有存储物质的耐温性。可高温高压灭菌订货信息：Nalgene 5050 存储盒，聚碳酸酯目录编号 5050-0001L×W×H，mm133×133×52L×W×H， in.5-1/4×5-1/4×2每盒数量4每箱数量24

Nalgene 5922 细菌培养皿架，丙烯酸框架，聚碳酸酯柱?重量轻，易于安全装运。具有耐用的PC 柱。出售时未组装。最多可装载24 个100 mm 的培养皿。订货信息：Nalgene 5922 细菌培养皿架，丙烯酸框架，聚碳酸酯柱目录编号 5922-0024L×W×H，mm20.6×10.2×20.3L×W×H，in.8-1/8×8×4每盒数量1每箱数量4

Nalgene 6803 移液管架，丙烯酸?使用该架可以将移液管管理器放置在Beta 防护罩后伸手可及的范围内。能放置四个标准尺寸的移液管管理器。可安装在工作台Beta 防护罩或自带的基台上。可保持工作区整齐有序。基台为3/8 in.(9mm) 厚的丙烯酸。透明订货信息：Nalgene 6803 移液管架，丙烯酸目录编号 6803-0001H×W×D，mm152×260×102H×W×D，in.6×10-1/4×4每箱数量1

Nalgene 5026可容纳100 个冻存管的SYSTEM 100 冻存盒，聚碳酸酯专为超低温存储而设计，可存储100 个SYSTEM 100 冻存管（目录编号5000-1012、-1020 和5001-1020）或其它相近大小的外螺纹管瓶，以及多数内螺纹管瓶。冻存盒可容纳81 个以上的管瓶，冷冻存储能力增加了23%。温度范围在-196℃至+121℃之间。透明盖上印有为库存目的而设计的网格，可观察管内物质，更可以避免操作不当。可高温高压灭菌订货信息：Nalgene 5026可容纳100 个冻存管的SYSTEM 100 冻存盒，聚碳酸酯目录编号 5026-1010阵列10×10L×W×H，mm133×133×52L×W×H，in.5-1/4×5-1/4×2-1/16每箱数量10

Dionex DNAPac PA100 寡核苷酸柱Thermo Scientific? Dionex? DNAPac? PA100 寡核苷酸柱的特点是采用强阴离子交换树脂，从而可对合成型和经过修饰的寡核苷酸进行高分辨率分析和纯化。描述 13μm、薄膜型、无孔、聚合物树脂，并带有与季胺官能团键合的 MicroBeads?可对寡核苷酸进行 n、n-1 分离解析次级结构的寡核苷酸与溶剂、高 pH 和高温相容分析基于硫代磷酸酯的临床样品可轻松升级Dionex DNAPac PA100 寡核苷酸柱订货信息：分析柱DNAPac PA-100 Analytical Column (4 x 250 mm)043010DNAPac PA-100 Semi-Preparative Column (9 x 250 mm)043011DNAPac PA-100 Semi-Preparative Column (22 x 250 mm)SP2091FAST-Cartridge, DNAPac PA-100 (2 x 10 mm), Pkg of 150SP4008FAST-Cartridge, DNAPac PA-100 (2 x 10 mm), Pkg of 600SP3229DNA Pac PA-100 Analytical Column (2 x 250 mm)SP3686DNAPac PA-100 Column (22 x 50 mm)SP4513FAST-Cartridge, DNAPac PA-100 (2 x 10 mm), Pkg of 10SP4757保护柱DNAPac PA-100 Guard Column (2 x 50 mm)SP4016DNAPac PA-100 Guard Column (4 x 50 mm)043018For n, n-1 Resolution of Single-Stranded OligonucleotidesThe DNAPac? PA100 is a high-resolution anion-exchange column that provides single-base resolution. It is stable under denaturing conditions, rugged, reliable, and can be readily scaled up. The DNAPac PA100 is a 13 μm pellicular, nonporous polymeric resin with bound quaternary amine-functionalized MicroBeads?. The rapid mass-transport characteristics of this resin result in very high-resolution oligonucleotide separations.Capable of n, n-1 resolution for oligonucleotidesResolves oligonucleotides with secondary structuresCompatible with solvent, high pH, and high temperaturesAnalyzes phosphorothioate-based clinical samplesProvides easy scale-upThe MicroBead resin used in DNAPac columns provides high-resolution separations to ensure maximum peak purity, and makes linear scale-up of your separation easy. For more complex separations, the polymeric properties of the DNAPac PA100 allows great flexibility to select ideal conditions, including high pH, high temperature, or chaotropic agents.Synthetic oligonucleotides can be screened for production yield and failure sequences using the DNAPac PA100. Unit-base resolution of synthetic oligonucleotides to 60 bases and beyond has been demonstrated. The DNAPac PA100 can even be operated under denaturing conditions. Either high temperature (up to 90 °C) or high-pH eluents (up to pH 12.5) can be used to eliminate hydrogen bonding, allowing resolution of problem sequences such as self-complementary sequences or poly-G stretches.Separates RNA / Double-Stranded DNAThe DNAPac PA100 is ideally suited for the purification and analysis of synthetic RNA. Failure sequences are easily separated from the full-length product. Double-stranded DNA, such as plasmids, or restriction fragments are also separated.Analytical separations on the 4 mm diameter column can be scaled directly to larger diameter columns so preparative methods can be conveniently developed using small samples. The loading capacity of the DNAPac PA100 (4 × 250 mm) column is from 1 to 100 μg. Scaling the flow rate and sample size up for the 9 × 250 mm and 22 × 250 mm column yields essentially identical chromatography.DNAPac? PA100 for n, n - 1 Resolution of Single-Stranded Oligonucleotides SpecificationsTemperature range4–90 °CTypical operating conditions2400 psi at 1.0 mL/min (analytical and guard columns)Recommended flow rate: 1.0 mL/minMobile phase compatibilitypH 2–12.5 100% compatible with common organic solvents.Ionic form eluents: chloride, acetate, or bromide in lithium, sodium, or ammonium forms.Resin composition13 μm-diameter nonporous substrate (55% cross-linking) agglomerated with a 100 nm MicroBead alkyl quaternary ammonium functionalized latex (5% cross-linked).Anion-exchange capacity~40 μeq/column (4 × 250 mm analytical column)Column constructionPEEK? with 10-32 threaded ferrule-style end fittings.All components are nonmetallic.DimensionsDNAPac PA100 Analytical Column:2 × 250 mmDNAPac PA100 Guard Column:2 × 50 mmDNAPac PA100 Analytical Column:4 × 250 mmDNAPac PA100 Guard Column:4 × 50 mmDNAPac PA100 Semipreparative Column:9 × 250 mmDNAPac PA100 Semipreparative Column:22 × 250 mmDNAPac PA100 Semipreparative Guard Column:22 × 50 mmMaximum operating pressure4000 psi (27.9 MPa)Separation of oligonucleotides using the DNAPac? PA100. (A) Attempted Separation of 3 μg of pd(G)12-18 with a NaCl gradient of pH 8.0. (B) Resolution of pd(G)12-18 Homopolymers at pH 12.4 with a 500 to 900 mM NaCl Gradient. Analysis of Synthetic Homopolymer.Product Data SheetsDNAPac PA100 Data SheetDNAPac PA100 Analytical Column ManualApplication NotesAN 100: High-Resolution Analysis and Purification of Oligonucleotides with the DNAPac PA100 ColumnGuidesDNAPac PA100 Analytical Column ManualArticlesHigh-Resolution Nucleic Acid Separations by High-Performance Liquid Chromatography

Thermo ScientificTM NALGENETM三角瓶聚碳酸酯产品特色防碎瓶，为您提供了玻璃烧瓶外的另一种选择，并可产生相等的大肠杆菌和酵母菌的生长曲线振荡可提高混合程度聚碳酸酯具有极佳的机械强度具有直颈设计的特点，可使用标准 38 mm 不锈钢盖或塑料盖透明，便于观察可高温高压订购信息4110-0250-三角瓶，聚碳酸酯，250ml容量,CS/124110-0500-三角瓶，聚碳酸酯，500ml容量,CS/124110-1000-三角瓶，聚碳酸酯，1000ml容量,CS/64110-2000-三角瓶，聚碳酸酯，2000ml容量,CS/4