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pH, EC Meters & Control / pH and EC Solutions
Conductivity standard of 2.76ms used to calibrate EC/ TDS / CF meters.
Delivery: £7.99 - More Info
Debit, Credit and Paypal accepted - More Info
1 Image of 'Essentials CF/EC Calibration Solution', available from £3.50 at SomHydro, Yeovil.