安东帕康塔全自动五室真密度分析仪

Autotap和Dual Autotap测试研磨咖啡粉 的振实密度和流动性

根据USP <616>使用Autotap分析了几种烘培后的咖啡粉的振实密度，根据USP <1174>的卡尔指数和豪斯纳比分析了咖啡粉的流动性信息。

Ultrapyc 5000 | 新的应用领域：半固体样品的密度测试

Ultrapyc 5000的独特功能，如Peltier温度控制和双向气流设计，使这种半固态样品的测量变得超简单、超精密，并大大扩展了Ultrapyc系列的市场可能性。

安东帕康塔泥浆密度表征

应用在不同工业方向上的泥浆差异很大，需要一种可靠的表征方法来测量这类混合物的密度。安东帕康塔的Ultrapyc系列固体真密度分析仪可以精准的测试泥浆的真实密度，而且还可以确定泥浆中固体含量的百分比。

气体比重法分析3D打印部件及材料

气体比重法可用于评估固体材料（如3D打印部件及其相关原材料）的骨架密度。通过评估3D打印材料（如金属、陶瓷和聚合物）的骨架密度（对于形状规则的材料采用堆积密度）和开孔率，可以很容易的确定打印材料的差异。这些差异常常受到用户选择的打印参数的影响，并可能影响最终产品的性能及其预期应用的适用性。

Low Surface Area Analysis by Krypton Adsorption at 77 K

Measurement of very low surface area samples by manometric (volumetric) adsorption experiments using traditional nitrogen (77 K) or argon (87 K) is limited by the detection limits of even the best instrumentation. The recommended alternative is krypton adsorption at liquid nitrogen temperature (77 K), which improves the detection limit significantly and allows one to determine absolute surface areas down to 0.05 m2 or less.

Practical Methods to Prevent Sample Elutriation

In vacuum outgassing and vacuum-volumetric gas sorption instruments, sample elutriation should be prevented to extend the life of instrument components and ensure measurement accuracy. Simple ways to prevent sample elutriation are discussed, including hardware for samples that are particularly problematic.

Micropore Size Analysis of Porous Carbons Using CO2 Adsorption at 273.15 K (0 °C)

Activated carbons in the form of fibers, pellets, granules, and powders are used in air filters, water purification systems, for removing organic impurities from various solutions, as well as in a variety of medical, environmental, and agricultural applications. These highly microporous, high surface area materials are often characterized by their apparent BET surface area and their pore size distribution (PSD). Measuring the PSD of microporous samples using nitrogen or argon adsorption is a slow process, requiring very low vacuum levels that require an expensive turbomolecular pump. Alternatively the PSD can be determined quickly using carbon dioxide at 0°C, at higher pressures than using nitrogen or argon, thus increasing throughput and reducing the equipment cost.

Krypton Gas Adsorption for Thin Film Pore Size Analysis

Pore size distributions on thin films can be obtained using Krypton adsorption at 87 K. The pore size distributions are calculated using a calibrated method that is traceable to NLDFT. Silica and titania thin film measurements and corresponding pore size distributions at 87 K using Kr are discussed.

Pharma

Granulation and Drying: the Choice of Excipients Matters