分析套件

百灵达7500便携式多参数水质检测套件由于具有高集成度、易操作、高精度、检测项目齐全等多种优势，在常州市水质预警系统中发挥了巨大的技术支撑作用。经实践，配合百灵达预制式试剂的使用，能够在2小时内对数十项重要水质指标进行现场检测。本文介绍了7500在常州环境监测站的一些使用经验，不仅有助于获取更权威的水质分析报告，更是在线自动监测系统的有力补充。

上海伯东 Stratasys 为在织物和柔性基材上进行3D打印推出了全新解决方案——FabriX™创新套件。FabriX创新套件是一款易于使用、全面且可重复的解决方案，适用于Stratasys™ J850™ 3D打印机的新用户及现有用户。

EinScan HX携手3D打印，技术赋能汽车宽体套件的设计和制造！

铬在水中以三价铬和六价铬的形式存在。六价铬因具有致癌性， 尤其受到关注。本应用使用LAMBDA 265 紫外/ 可见分光光度计和MerkSpectraquant® 铬酸盐池测试套件完成六价铬的定量分析，结果准确、重现性好。铬酸盐池测试套件无需繁复准备化学溶液，也不用制备和测定标准样品，即可得到铬酸盐浓度。该方法与APHA 3500-Cr B 和DIN 38405-24 类似，并被美国环保署批准用于废水。

拉曼光谱作为TruNarc毒品鉴定系统的技术根本，是一项受世界各地实验室青睐的高选择性、强有力的化学分析技术。TruNarc分析仪让拉曼技术在现场实际工作中发挥作用，快速鉴定毒品、前体和常用稀释剂，切实的满足需求。为解决困扰拉曼光谱仪的固有问题：荧光现象，我们开发了一种易于使用的测试套件来分析疑似海洛因。通过TruNarc分析仪和海洛因测试套件，执法警官可充分利用这套可靠、性价比高的设备来进行可疑毒品鉴定。清晰的分析结果简明易懂，无需任何辅助说明，加上自动生成、防止篡改的报告，可确保警官使用起来高效而安全。

使用辅酶Q10专用分析系统（包含专用柱套件）对氧化型Q10标准品（上）与人血浆样品（下，三个样品的结果重叠）进行分析的结果如图。可知通常血浆中的辅酶Q10的存在形式是以还原型为主的。

Epsilon 1 仪器主机和用户软件，针对燃料中的硫进行了符合ISO 13032 标准的出厂预校准。针对氯分析进行了预校准。验证标准样品。一个启动套件，用于制备 100 个液体样品杯进行分析。监控样品，使校准保持最新状态。

Epoxy resins are complex materials manufactured by the reaction of a ‘resin’ with a ‘hardener’. This produces a cross-linked polymer that is extremely strong, tough and may be used to bond materials together. The resin component of the mixture is an epoxide pre-polymer, typically produced by the reaction of an epoxide with bisphenol-A. The resulting short-chain material contains pendant –OH and epoxide functionalities and is polar in nature. The molecular weight of the epoxide chains in the resin is important as this influences the curing rate of the final epoxy resin formulation when mixed with the hardener, however, accurate molecular weights are difficult to obtain due to the complex, inhomogeneous nature of the epoxide polymer chains. Gel permeation chromatography (GPC) is a well-known technique for assessing the molecular weight distribution of polymers, a property that influences many physical characteristics such as the curing time of epoxy resins. GPC viscometry employing a viscometer in combination with a differential refractive index detector has the advantage of allowing the determination of accurate molecular weights for structurally complex polymers and co-polymers via the Universal Calibration approach. Using this methodology, the same molecular weights are determined for samples regardless of the standards used to create the calibration. This application note describes the analysis of two samples of epoxide pre-polymers by GPC viscometry

There has been increasing interest in the synthesis of star-branched polymers due to their unusual flow and viscosity properties compared to linear analogs. Starbranched polymers are constructed with several ‘arms’ radiating from a central core, either by preparing the individual arms and attaching them to a central molecule - the ‘arms first’ approach - or by growing the polymer arms from a central core - the ‘core first’ approach. Many commercial polymers can be constructed with a star-branched morphology relatively easily, but their characterization is still a challenge to the analytical chemist. Gel permeation chromatography (GPC) employing a concentration detector (typically a refractive index detector) combined with a viscometer can be used to measure not only the molecular weight of the materials but also to investigate the star-branched structure. The 390-MDS is ideal for this type of application since it was specifically designed to extract additional information from polymers by GPC. A series of PS star-branched polymers was analyzed, which had been synthesized by a ‘core first’ approach giving theoretical 5-, 14- and 21-arm structures.

The structure of many common types of polymer may be modified by either postpolymerization reaction or by the use of modified monomers, producing materials with new and novel properties. Understanding and assessing the effect of these modified structures on the behavior of polymers in various applications is crucial to developing novel uses for such materials. Polystyrene is one of the most commonly seen polymers, used primarily for the manufacture of packing materials. Modified forms of polystyrene may be produced by the use of novel styrene monomers. Gel permeation chromatography (GPC) is a well-known technique for assessing the molecular weight distribution of polymers, a property that influences many physical characteristics. Importantly, increasing the sophistication of the GPC experiment by the use of additional detectors allows the structure and solution properties of polymers to be assessed, of interest when studying the affect of structural modifications on a polymer. Triple detection employing a light scattering detector and a viscometer in combination with a refractive index detector may be used to determine accurate molecular weights for polymers for which narrow standards are not available, and to assess their solvation properties. This application note describes the analysis of a sample of polystyrene and a modified polybromostyrene material by triple detection.

固定相和流动相筛选是分析型超临界流体色谱(SFC) 方法开发的一个重要方面。本文将介绍使用Agilent 1260 Infinity 分析型SFC 系统色谱柱筛选套件自动筛选色谱柱和改性剂。通过筛选六种固定相和两种改性剂来确定最佳组合。对于所选的样品，使用Agilent ZORBAX Rx-SIL 色谱柱并以甲醇作为改性剂得到了最佳的分析结果，所有化合物均实现基线分离。

Polysaccharides are complex polymers constructed from sugar units. There is a wide range of polysaccharides, many of which show large structural differences due to the manner in which they are synthesized. This is most commonly seen in the presence of branches on the polymer chains of some polysaccharides, which strongly influences properties such as solution viscosity. Pullulan polysaccharide is composed of maltotriose units in the polymer backbone, produced from starch by the action of a fungus. Pullulan has a linear structure, whereas in contrast dextran is a complex glucan with many differing components manufactured from sucrose by bacterial action that has a highly branched structure. Investigating the structure of polysaccharides is of interest for determining their properties in applications such as their use as food additives.Gel permeation chromatography (GPC) is a well-known technique for assessing the molecular weight distribution of polymers, a property that influences many of the physical characteristics of these materials. GPC viscometry, employing a viscometer in combination with a differential refractive index detector, has the advantage of allowing the accurate determination of molecular weights for structurally complex polymers and co-polymers regardless of the their structure, via the Universal Calibration approach. GPC viscometry also reveals information about the solution viscosity of polymers, a property related to molecular size. Using this information, the branched structure of polymers can be investigated. This application note describes the analysis of two samples of polysaccharide by GPC viscometry, pullulan with a linear structure, and a highly branched dextran.

亚硝胺和农药造成的水污染可能有多种来源，包括工业径流、农业生产和废水排放[1]。美国环保署建议采用特定的分析方法来分析亚硝胺和有机氯农药。传统上，采用正化学电离（PCI）模式的GCMS对亚硝胺进行分析（EPA 521），而采用配有电子捕获检测器（ECD）的GC对有机氯农药进行分析（EPA 8081）[2,3]。然而，这些技术需要使用易燃气体或放射性检测器，这需要特殊许可。分析技术的进步引入了一种替代方法，即在配有Twin Line MS套件的单一GC-MS/MS系统中使用多反应监测（MRM）模式。这种创新方法可在同一台仪器中安装两根色谱柱，从而提高了实验效率，同时实现了高灵敏度。对方法检出限和定量限进行了评估，以确保结果可靠。

重组蛋白质生产的目标是产生高产量的功能性蛋白质。实验成功的重要基础是细胞的培养以及离心（离心是蛋白质分离和纯化的基本技术）。本应用指南描述了用作概念系统验证的重组人磷酸丝氨酸磷酸酶（hPSP）的生产流程。从Innova? S44i 摇床中细菌培养物的生长开始，使用装载6 L转子的高速离心机（CR30NX 或CR22N），搭配1.5 L 三角离心瓶收获这些培养物。该离心收获套装可辅以“ 锥底管高速沉淀离心套件”（转子含配套的50 mL 锥底管），用于裂解后续的分离操作。结果表明，这种产品组合高效灵活，可为重组蛋白大规模生产工作流程奠定基础。

“Smart materials” are capable of varying their physical properties in response to environmental changes or stimuli. Such stimuli include temperature, pH, solvent composition, and electric field strength. In particular, smart hydrogels, which change their shrinking and swelling characteristics in response to external stimuli, have been studied for use in engineering and biomedical applications, such as controlled drug release. Poly(n-isopropylacrylamide) (PNIPAM) gel is an important smart hydrogel that responds to temperature changes. PNIPAM gels exhibit negative thermosensitivity, meaning that they undergo a significant level of shrinkage with increasing temperature. Precise control over a hydrogel’s shrinking and swelling characteristics is desirable since this may lead to control over its drug release/ uptake properties. Among other important properties that affect the thermosensitivity of PNIPAM, such as particle structure and size, a key characteristic is the molecular weight distribution. The molecular weight distributions of two PNIPAM polymers were accurately measured by means of GPC with online viscometry, allowing application of the universal calibration technique. This method permits an accurate calibration of the GPC system based upon molecular size in solution (using the relationship between the viscosity of the eluting polymer and its molecular weight). This in turn allows accurate molecular weights to be calculated even though the polymer standards used are not chemically identical to the polymer under investigation, as the column is separating on size not molecular weight. As a result, the molecular weight data usually obtained via this technique are very accurate, in contrast to conventional GPC employing a concentration detector only (eg UV, RI), which provides molecular weight data relative to the polymer calibration standards used. The 390-MDS can be used to provide accurate molecular weights for polymers of unusual structure by employing differen

隐形眼镜的水胶膜必须具备基本的机械强度，有种针刺试验可以表征其耐用特性。ＤＨＲ流变仪具有法向力的力量再平衡（ＦＲＴ）专利，再进一步结合真实定位（True Position）专利功能下，拥有优异的挤拉（Squeeze-Pull Off）测试能力。此外还有自定义夹具惯量校正功能以及万用固定器（Generic Container Holder）的配合下，可以由用户自己研发专用合宜的测试套件。

1样品准备： 2选择适配的研磨套件： 3研磨前设置： 4 研磨操作： 5 研磨后处理： 6样品分析：

金字塔工程服务公司一直在开发他们的手套箱系列。集成在手套箱系统中的是Systech EC900氧气分析仪，它提供连续和高精度的氧气水平监测。

运用激光技术的纳米微粒跟踪分析新系统可以用于液体中实时的直接或单独观察到纳米颗粒物如病毒和病毒聚集体，还可以观察到高分辨率颗粒物大小的分布轮廓。该技术具有快速、可靠、准确并且成本低，正因为这些特点使之成为现存纳米颗粒分析方法（如动态光散射（DLS）、电子相关光谱（PCS）、以及电子显微镜（EM）方法）的很好的替代或者补足。该仪器可以同时、直接测量单个粒子扩散系数，并且用户只能用专用的纳米粒子跟踪分析(NTA) 软件套件自动对样品中的病毒和聚集体计数和测量尺寸。图像显示结果表示为颗粒大小/颗粒数（或者颗粒大小/相对亮度）。这种单个颗粒的分析方法克服了那种只能给出平均颗粒大小分布的数据的颗粒分析系统所存在的固有的局限性。

本文概述了使用FIAS-AAS准确和可靠的对水中的砷，硒和汞进行预处理并分析测定的程序。在将氢化物原子化之前先进行了一个浓缩的步骤，使得它的分析比溶液雾化系统更加高效。加热石英雾化器的使用，使样品传输效率增强，从而提高了灵敏度以致可进行含量极低的测定。实验结果表明，PinAAcle 900T结合FIAS 400流动注射系统可以为水中砷、硒和汞的分析提供准确和精确的数据。这一应用程序可以用在所有的PinAAcle光谱仪与适当的适配器套件模式中。

Polyvinyl butyral (PVB) is a resin prepared from polyvinyl alcohol by reaction with butyraldehyde. PVB is an important material that has a wide range of uses in applications that require strong binding, optical clarity, excellent surface adhesion, toughness and flexibility. The most well-known application of PVB is in laminated safety glass, for example, in the windscreens of vehicles. In such products, PVB is used as an interface layer between two sheets of toughened glass. The interface layer absorbs the energy of impacts, binding broken shards of glass together and distributing the force of the impact over a wide area. The use of laminated glass has greatly reduced injuries resulting from automobile accidents. As it is the viscoelastic properties of PVB that contribute to its performance in glass laminates, the molecular weight distribution of the material must be closely monitored to ensure optimum performance. Gel permeation chromatography (GPC) with triple detection, employing a light scattering detector and viscometer, may be used to determine accurate molecular weights for polymers such as PVB. Three PVB materials were analyzed using these techniques, one of which did not perform as expected in application testing.

本文概述了使用FIAS-AAS准确和可靠的对水中的硒进行预处理并分析测定的程序。在将氢化物原子化之前先进行了一个浓缩的步骤，使得它的分析比溶液雾化系统更加高效。加热石英雾化器的使用，使样品传输效率增强，从而提高了灵敏度以致可进行含量极低的测定。实验结果表明，PinAAcle 900T结合FIAS 400流动注射系统可以为水中硒的分析提供准确和精确的数据。这一应用程序可以用在所有的PinAAcle光谱仪与适当的适配器套件模式中。

目前常用的医用手套主要有三种，分别是一次性使用医用橡胶检查手套、一次性使用灭菌橡胶外科手套和一次性使用非灭菌橡胶外科手套。在手套的使用方面，呈现了3大特点：手套的使用率低；灭菌手套与非灭菌手套使用界限不清；忽略摘手套后手部的清洁。随着手套使用规范的细化和医护人员卫生意识的提高，基本实现了在不同的操作环境佩戴合适的医用手套，唯独第三点仍被大部分人所忽略。目前，超过一半的医护人员普遍认为，手部清洁后戴上灭菌手套，手就不会被污染，摘掉手套也不用洗手。殊不知，手套虽能减少操作者双手被病菌污染的程度，但并不能保证其免受细菌的污染，医用手套材料自身的渗透性和细微穿孔都会造成医患双方的交互感染。

本文概述了使用FIAS-AAS准确和可靠的对水中的砷进行预处理并分析测定的程序。在将氢化物原子化之前先进行了一个浓缩的步骤，使得它的分析比溶液雾化系统更加高效。加热石英雾化器的使用，使样品传输效率增强，从而提高了灵敏度以致可进行含量极低的测定。实验结果表明，PinAAcle 900T结合FIAS 400流动注射系统可以为水中砷的分析提供准确和精确的数据。这一应用程序可以用在所有的PinAAcle光谱仪与适当的适配器套件模式中。

本文概述了使用FIAS-AAS准确和可靠的对水中的汞进行预处理并分析测定的程序。在将氢化物原子化之前先进行了一个浓缩的步骤，使得它的分析比溶液雾化系统更加高效。加热石英雾化器的使用，使样品传输效率增强，从而提高了灵敏度以致可进行含量极低的测定。实验结果表明，PinAAcle 900T结合FIAS 400流动注射系统可以为水中汞的分析提供准确和精确的数据。这一应用程序可以用在所有的PinAAcle光谱仪与适当的适配器套件模式中。

测试目的：测试甲烷及非甲烷总烃分析条件及实际检测效果，空气本底对总烃定量结果的影响。仪器配置：主机Agilent 7890B， 带FID 检测器，辅助流量控制附加设备：气动十通阀、气体定量环色谱柱套柱：GS-TEK 甲烷及非甲烷总烃分析套柱（两根填充柱）

Estació n Enoló gica de Haro（哈罗葡萄酒酿造科技站）购买了一种Wine-ProfilingTM系统，一种可获得葡萄酒“指纹图谱”的分析方法它是分析西班牙葡萄酒并将西班牙葡萄酒样本纳入全球数据库的参考实验室。

--般在锅炉用水水质处理过程中要加入一定量的联氨，使联氨和水中的溶解氧反应，以降低水中溶解氧的含量,但联氨的加入量不可过多,在锅炉用水前处理程序中对联氨的加入有一定的要求。水中联氨的监测对工业领域环境中水质量的控制是非常重要的技术指标,特别是作为水力、火力发电厂对锅炉用水中的联氨含量的监测作为化学监督的重要参数,在GB/T 6906中关于锅炉用水和冷却水中联氨的测定,给出了明确的分析方法和相关规定。联氨分析仪是在联氨化学分析方法的基础上开发的一种检测联氨浓度的专用检测仪器。目前国家还没有制订出联氨分析仪的检定规程。笔者根据联氨化学分析方法和联氨分析仪的使用说明书,研究设计了一套对联氨分析仪的检测方法,并进行了实践验证。

水中硅酸根的监测对工业领域环境中水质量的控制是非常重要的技术指标,特别是作为水力、火力发电厂对锅炉用水中的硅含量的监测作为化学监督的重要参数。在石化、制药、冶金和半导体工业水处理等方面也需要对水中硅酸根含量进行测量和监测。硅酸根分析仪是在硅酸根化学分析方法的基础上开发的一种检测仪器,目前国家还没有制订出硅酸根分析仪的检定规程。笔者根据硅酸根化学分析方法和硅酸根分析仪的使用说明书，研究设计了一套对硅酸根分析仪的检测方法,并进行了实践验证。

通过热分析技术可进行陶瓷原料的表征和陶瓷烧结过程的模拟，因此陶瓷行业成为了热分析技术的经典应用领域̷̷