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The full range
For super accurate calibration use these solutions at 25 degrees centigrade and never keep an opened bottle for more than 6 months. As well we offer pH electrode storage/refill & cleaning solutions. These are not necessary for our Hobby pH Meter but are useful for more expensive instruments requiring more care and attention.
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*Growell Hydroponics offers these Calibration & Storage Solutions ... |
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Standard
postage
(per order):
£5.95 |
 Surcharge
on heavy items marked with:
£5.00 |
Surcharge for Scottish Islands, Northern Ireland
& Isle of Man:
£20.00 |
Surcharge for Eire:
£25.00 |
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