Variation Name	Price	Quantity
30ml	£1.00
250ml	£3.49

Description

Essentials Calibration Solutions, necessary to calibrate pH & EC/CF meters, For super accurate calibration use these solutions at 25 degrees centigrade and never keep an opened bottle for more than 6 months. These are not necessary for our Hobby pH Meter but are useful for more expensive instruments requiring more care and attention.