News About Dyes And Stains
Azure B BSC Certification requirement change
As of March 3rd of 2025, the BSC Assay laboratory changed the BSC Certification requirements for Azure B. Test Current Requirement Old Requirement UV-Vis 645-649 nm 1.02-1.18 R ratio Quantitation Minimum 80% (Updated from a Minimum 89%) HPLC Thiazine...
A New Carminic acid – Will Wonders Never Cease?
Richard W. Dapson writes, on 17th May 2021: Carminic acid and its aluminum lake, carmine, are important histological dyes, but commercial trade in these products has undergone massive shifts in the last few decades due to market forces way beyond histology. Originally...
Are fluorescent probes biological stains?
Are fluorescent probes biological stains? On 29th April 2021 Richard W. Horobin wrote: There are various communities of clinical lab workers who use “traditional” microscopic staining methods, such as hematoxylin and eosin, and the Gram or Papanicolaou stains....
Terminology of Staining. Online Glossary.
In December 2018 the Biological Stain Commission published Version 1.0 of an online glossary of words, names and short phrases relating to staining and histotechnique, including fixation, tissue processing and, of course, staining – with dyes, histochemical methods...
Current issues of interest to vendors and users of dyes and biological stains.
Certified dyes [Updated October 2022] The following additions and changes have been made since 2002, the year of publication of the 10th edition of Conn's Biological Stains and of a detailed account of tests then used in the Commission's assay laboratory (Penney et...