Opening a hematoxylin 3 months after receiving it cannot be the cause UNLESS it has an expiration date within that period, or is close to expiring (lets say before 2008).
  René J.

Robyn Vazquez  wrote:
  Hello,
We have been using Gills III, as of recently approx 1 month, to do
frozens on a linear stainer, it has been getting stringy. Not a lot but
significantly. We rec'd it in 6/07 and opened it in 9/07. Could it be
too old? I tried filtering it, but still stringy. I also, turned up
the water to help rinse it, but I don't want to take a chance on losing
tissue. Thanks in advanced.

Robyn
OHSU
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