AmScope ML-A-1-A Microscope Immersion Oil, 1 Oz, 30mL, PT# 16482-1OZ Oil Immersion Type A Low Viscosity 1oz 1Oz Made by Cargille Laboratories Microscope Immersion oil for all microscopes, Type A Volume: 1 Oz (30ml) Refractive index ND=1.515 Meets ISO-8036/1; Safe for all lenses Standardized at 23 C