分子光谱->FTIR 光谱仪->FTIR 仪器和成像系统备件

Test film, polystyrene, NIST traceable, set of 2 films each mounted in 2 x 4 in card holder that fits into universal slide mount. 聚苯乙烯测试膜，NIST 可追溯。聚苯乙烯测试膜（2/套），均安装在可以直接放入通用样品槽的 2 x 4 英寸样品架中
包含可追溯到 five NIST 1921b frequencies 的证书。

Notes	Polystyrene test films, 2/pk, mounted to 2 x 4 inch cardstock holder that fits in the universal slide mount. Includes certificate of traceability to five NIST 1921b frequencies
UNSPSC Code	41116107