Dear JK  Camblab do a hand held job they have a web site camblab.co.uk
I have found it to be reliable Mary

On Thu, 17 Feb 2000 Jkpresnell2@cs.com wrote:

> At NSH, I heard a lecturer mention a handheld pH meter that was not 
> expensive. Can anone provide any information about such a unit??  We just 
> want to check Eosin etc.
> At the time this was not a concern, but I am in a new position and we need to 
> do more QC and we need to keep it simple.
> Thank you.
> 
>