By Anonymous on Thursday, July 18, 2002 - 10:05 am:
Dear chromatographers,
I am working on VIT B12, as it is fast degrading i am getting trouble to achieve RSD. Any one can suggest me good method for VIT B12(cyanocobalamine).
By chris on Thursday, July 18, 2002 - 12:31 pm:
You should look at the USP monograph for USP for Water and Oils soluble tablets with minerals in the Nutritional supplements section. There are 2 methods there. One is HPLC and the other is Microbiological. Also, if I remember correctly, you should be careful to protect the solutions from light.
By Anonymous on Friday, July 19, 2002 - 07:21 am:
Thanks chris for giving early reply
By Anonymous on Tuesday, July 30, 2002 - 07:53 am:
look for Domingo Blanco hplc capilar publications of vitamins
By simone on Monday, March 3, 2003 - 08:03 am:
the best method for B12 (if isn't in mix with another components) assay is by spectrophotometry uv-vis (see ph-eur)
By Anonymous on Friday, March 7, 2003 - 03:13 am:
Hi All,
I'm a placement student doing my final year project and it is to try and integrate the separation of Vit B1, B2, and B6 using as few as possible HPLC and mobile phases. Any suggestions?
By Anonymous on Friday, April 30, 2004 - 12:03 pm: