dean
Member
As part of what I do I have to keep records of water quality yep I know a waste of time and s ball ache but I’ve got a hanna pen and its needs recalibrating
So I went into the hanna website and omg what a price for 20ml sachets
So I’m asking you clever people if there’s an alternative to buying the hanna ones ?
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So I went into the hanna website and omg what a price for 20ml sachets
So I’m asking you clever people if there’s an alternative to buying the hanna ones ?
Sent from my iPhone using Tapatalk