Comparison : Item # 0005A-590W, Model SL-3 NaCl Sealed Liquid Cell with rectangular (dispersive) aperture
Item # 0005B-783W, Model SL-3 KCl Sealed Liquid Cell with rectangular (dispersive) aperture
Item # 0005C-777W, Model SL-3 KBr Sealed Liquid Cell with rectangular (dispersive) aperture
Item # 0005D-790W, Model SL-3 CaF2 Sealed Liquid Cell with rectangular (dispersive) aperture
Item # 0005E-797W, Model SL-3 BaF2 Sealed Liquid Cell with rectangular (dispersive) aperture