供应美国标准局NIST粉末状沸石标准物质
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These RMs are intended to provide a common source of zeolite materials for measurement comparisons. Additional reference and information values are provided for atomic ratios of Si to Al and Na to Al, trace element content,enthalpy of formation, unit cell parameters and particle size distributions. Figures are provided showing spectra for NMR analyses, plots of particle size distribution, lectron microscope images of particles and plots of variation in sample mass with change in ambient humidity./ 这些RMs旨在为测量提供沸石材料的共同来源。提供了硅铝原子比、钠铝原子比、微量元素含量等附加参考值和信息值，生成焓、晶胞参数和粒径分布。所提供的图显示了核磁共振分析的光谱、粒度分布图、粒子的电子显微镜图像和样品的变化图随环境湿度变化的样品质量。
SRM 8850 Zeolite Y Y型沸石 35-40 g
SRM 8851 Zeolite A A型沸石 35-40 g/ 美国标准局NIST粉末状沸石标准物质
SRM 8852 Ammonium ZSM-5 Zeolite 铵型ZSM-5沸石 35-40 g