Good Afternoon All,
I have a question for those of you out there doing Immunos. I am having a
problem with the Vector DAB kit that I just bought, when you add the DAB
drops to the buffered double distilled water it immediately turns dark
brown. This has not happened with any previous kits. To make matters worse I
am in the middle of a study and hate to risk any study slides with this
chromagen. I called technical support for Vector and was told I could fed-ex
back the kit and they would do another QC on it, but in the interim I would
have to buy an additional kit to finish the work I am in the middle of.
 Now I have been off the bench for 2 years, but it seemed to me that
previously when there was a question with a reagent the supplier sent out a
replacement first so that you were not left high and dry. This has still
been my experience with DAKO, they have been great! 
My question- Is this type of non-service the hallmark for companies now? 
I have learned a valuable lessen about who I will buy from in the future.
Mary Georger
University of Rochester Cen