对重量法蒸汽吸附仪而言，相对湿度的校正是非常重要的。此验证方法依赖的原则是，在一定温度下，饱和盐溶液上方水蒸汽分压与环境平衡且为一常数。

程序升温还原(temperature-programmed reduction,TPR)是金属氧化物，混合金属氧化物和分散于载体上金属氧化物的表征的重要工具。TPR方法可获得氧化物表面还原性的定量信息和还原表面的多相性信息

磁性粒子由于其难于分散和易于团聚而难于分析。当常规的分散技术和超声方法不适用时则需要特殊的分析方法。其中之一方法加热材料将磁势场降为0，然而这个方法由于烧结会改变颗粒尺寸。另外一个方法就是将材料在降低的磁势场内消磁。这个方法会使部分材料消磁或者样品仅在消磁区域内脱磁。两种方法都会影响颗粒粒径分布。 既不用加热也不用消磁的特殊的分散方法可用于Elzone分析磁性颗粒。粘性液体，例如蜂蜜，使用玻片来分散样品。

DVS通常用于测量疏水性药物材料的水吸附性能。这些疏水性药物水分亲和性主要是由于材料中存在一定程度的无定形态。高度结晶材料像是药物盐对水的亲和性非常低，这是由其在结晶过程形成颗粒的表面能低决定的。这里，用DVS-1对两个批次的最大吸水量不超过过0.1％的相对疏水性药物的水吸附性质进行分析。

美国麦克生产的Micromeritics ASAP 2020是一个广泛应用于各类材料气体吸附测试的“分析专家”，同样可用于固体粉末以及多孔材料氢气吸附性能的测定。针对燃料电池和储氢材料研究的需求，ASAP2020 的软件设计方便研究人员的专业操作

对于一些材料，样品颗粒粒径的中位值和标准偏差的测量是不足够的。少量的大的或者聚集颗粒的存在可以影响产品的性能。例如，磨料，颜料，血液，墨水，调色剂和炸药这些样品中的大颗粒或者聚集颗粒未检测就会遇到许多问题。 电敏感区域法测量通过孔口的颗粒尺寸和数量，其是能够准确测定大颗粒或聚集颗粒的存在和数量的少数几个技术之一。其他方法包括显微镜法和筛分法，都是非常耗时的。Elzone使用电敏感区域法可以报告分布数据（与显微镜法相比）或者体积数据（与筛分法相比）。

许多与能源相关的二氧化碳管理办法，包括低碳能源(例如核能，太阳能，风能，地热能，和生物质能)。科学家们也开始寻求提高能源转换效率的方法，这样使用较少的矿物燃料就可满足相同能量输出需要。然而，尽管有希望，目前这些选择对矿物燃料的需求和使用影响相对较小。矿物燃料继续提供世界大部分能源消耗。日益增长的能源需求，选择替代能源的落后，全球经济仍然依赖矿物燃料且其相对较低的成本和高获得性，意味着矿物燃料的使用将可能持续数十年。因此，目前有很多科研力量致力于寻找有效的方法，降低大气中和工业排放的二氧化碳量。

Quality departments and laboratories use avariety of particle size analyzers and analytical techniques to determine millions of particle size distributions peryear. This information is a key indicator of a material’s quality—knowing the particle size distribution enables a material user to predict how that material will behave in the manufacturing process. However, for this information to be considered reliable, the material user must have confidence in the quality of the analysis results.

During the current era of increasing globalization , manufacturing operations are being located around the world. Companies that manufacture or use powdered materials may need to produce identical products at many different plants on several continents. This can create quality control headaches that underscore the importance of having effective methods and instrumentation for measuring and controlling product quality.

激光散射技术的发展导致了快速测试的发展，然而，直到如今，激光粒度仪的测试质量没有更大飞跃。为了获得高质量的数据，麦克公司用了很长时间开发了新一代的激光散射仪。它是第一台使用先进的航天级CCD数字探测技术给出超高水平的精度、灵敏度、重复性和重现性的激光粒度仪。

颗粒分析在医药行业中，无论是生产效率或生产过程，都起着关键性的作用。粒径可以影响辅料或活性药物成份（ API ）的溶解度，并也可能会影响到药物制剂。各种已有的颗粒分析技术完全能满足今天的药品市场所需的颗粒粒度测量要求。 然而，在某些情况下，简单的控制颗粒大小并不能完全的控制最终产品。对监测和控制颗粒的形状尤为重要。近年来，在制药行业的研究和质量控制中，了解颗粒形状的信息促进了图像分析的发展。

Sedimentation analysis based upon Stokes’ Law provides a convenient method for determining particle size distribution (PSD). A single solid (or nonporous) sphere settling in a fluid has a terminal settling velocity which is uniquely related to its diameter. The SediGraph determines particle size distributions using the sedimentation method. By measuring the gravity-induced settling velocities of different size particles in a liquid with known properties, the particle sizes are determined. The rate at which nonporous particles fall through a liquid is described by Stokes’ Law

Porous powders find application in many industries these days. These range from catalysts to pharmaceuticals; from environmental cleanup to liquid chromatography. Not only is it important to know the pore size distribution of these powders, but it is also crucial to have a reliable particle size distribution analysis of these materials. In general, these analyses can be performed in much the same way as analyses of nonporous particles. When using laser-scattering particle size analysis, however, a few additional precautions are necessary.

Particle size distribution analysis is frequently used to characterize pharmaceutical powders. Efficacy and dosage sizes are often correlated to median or mean particle diameters.Pharmaceutical production is often monitored using rapid particle size analysis typical of laser light scattering. The Saturn DigiSizercan be used to quickly provide high resolution particle size distribution analyses. Commercially available powdered aspirin samples are used to illustrate how particle size analysis may be used to monitor product quality.

The SediGraph method for particle sizing has been used in laboratories world wide since 1967. Although more ‘modern’alternativeshave been developed for determining particle size, the SediGraph method continues to satisfy best the needs of certain applications.The reasons for the continued viability of the SediGraph method is the subject of this article.

The unique balanced measurement method used in the Gemini permits small amounts of surface area to be measured with nitrogen gas that otherwise would be measurable only with krypton. Low surface area samples often displace many times more nitrogen than they adsorb, especially if composed of low-density materials of large particle size. The standard, built-in, helium free-space difference measurement and mathematical compensation routine typically can remove the effects of more than 99% of this sample displacement, but the small amount remaining uncompensated can still be significant.

Many microporous materials (such as carbons, zeolites, and molecular sieves) retain helium in their pore structures after being exposed to helium. The helium penetrates deep into the pores and takes a long time to diffuse from the material.

介绍了麦克公司最新产品ASAP2050,DVVA4000.以及其的相关应用.ASAP2050是世界上第一款静态法高压物理吸附仪.在ASAP2020的基础上开发完成的,适用于各种材料,包括储氢材料,燃料电池等.

巧克力蛋糕和巧克力糖果的味道和质地很大程度上取决于制作原料成分中的颗粒度。巧克力制造商们通过“口感”来定位他们产品的特点。如果产品粗粒太多，就会被品尝者们形容成“像沙泺一样粗糙,难以下咽”，如果产品颗粒太细，又会被称为“太粘，太软”。 粒度分析可以根据这些被描述的状况设定数字化的参数，使用它指导巧克力生产商们尽力的制造最适合大众口味的产品。

转载Science, Vol 304, Issue 5673, 990-992 , 14 May 2004 Porosity measurements. The specific surface area was determined from nitrogen adsorption isotherms at 77 K on a Micromeretics ASAP 2010 porosimeter (Fig. S2) using the BET method (S4). The pore diameter of IM-12 (Fig. S3) was determined by the Horvath-Kawazoe method (S5) applied on the adsorption branch of the isotherm.