A New Use for Schiff’s Reagent

Richard W. Dapson writes, on 15th October 2021: Detection of formaldehyde in milk. Get your cell phones ready: there is a new use for Schiff’s reagent! But first, let’s review what Schiff’s reagent is and does. The classic Schiff reagent is a...

The stain extracted from roselle is not daphniphylline

Rosemary B. Bassey writes on 28th August 2021: Major pigment in Hibiscus sabdariffa: Hibiscin, now known as Daphniphylline? Setting the record straight! “The major pigment, formerly reported as hibiscin, has been identified as daphniphylline” [1]. This statement,...

What are tissue marking inks?

For an excised tumor it is often important to relate the surfaces of the specimen to their original anatomical locations, to locate any remaining neoplastic tissue that still needs to be removed. Tissue inks are used for painting surfaces in different colors. An ideal...