I am looking for a chart of what the medication should show up as on the brix scale. I want to use the Palm abbe digital refractometer mostly for Fentanyl, midazolam, morphine pf, ketamine, morphine, meperidine, sufentanil, and astramorph. If you know of where I can find this information that would be greatly appreciated.
Thank you for your question. There is no standard chart of Brix or refractive index value of injectable narcotics as measured by refractometer. The reason is that there are small variations between lots and also between manufacturers. The best method is to characterize each of the fluids that you commonly use yourself to create a uniform control standard (reference measurements). All future measurements of the reference drugs can then be compared to your control standards.