I bought one of the cheapo ones recently and it suggested calibration with distilled water.
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Hi
Thanks just received email it's been posted sadly they couldn't do next day delivery from China
they usually arrive in a couple of weeks.
I bought a cheapo from China which was useless. I learnt my lesson and paid more for a decent British based one.
Cazza
Are you sure it wasn't imported from China?
I bought a cheapo from China which was useless. I learnt my lesson and paid more for a decent British based one.
Cazza
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