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How to care for Groline pH electrodes

What is the correct pH for growing?

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HI-981420 Groline Monitor

HI-981420 Groline Monitor - pH, EC, temperature

£372.60 (exc. VAT)

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HI-981421-02 Groline 24 Hour Hydroponics Monitor for pH, EC/TDS and Temperature for in-line applications

£486.00 (exc. VAT)

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Hanna HI-9814 Groline Hydroponic Portable pH/EC/TDS/Temperature Meter

HI-9814 Groline Hydroponic Portable pH/EC/TDS/Temperature Meter

£262.50 (exc. VAT)

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Hanna Instruments UK HI-98131 GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

HI-98131 GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

£207.00 (exc. VAT)

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Hanna HI-98318 GroLine Waterproof EC/TDS (ppm) Tester

HI-98318 GroLine Waterproof EC/TDS (ppm) Tester

£77.50 (exc. VAT)

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HI-9812-51 pH EC TDS Temperature Portable Meter

£304.50 (exc. VAT)

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HI-9811-51 pH/EC/TDS Portable Meter with HI-1285-51

£315.50 (exc. VAT)

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HANNA HI-98197 Professional Waterproof Meter for Ultrapure Water

HI-98197 Professional Waterproof Meter for Ultrapure Water

£1,866.50 (exc. VAT)

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HI-991301 High Range EC, TDS, pH and °C Meter

HI-991301 High Range EC, TDS, pH and °C Meter

£798.00 (exc. VAT)

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Hanna HI-991300 Waterproof pH, EC, TDS and Temperature Meter with Advanced Features

HI-991300 Waterproof pH, EC, TDS and Temperature Meter with Advanced Features

£832.00 (exc. VAT)

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HANNA HI-98194 Multiparameter Waterproof Meter

HI-98194 Multiparameter Waterproof Meter

£1,925.50 (exc. VAT)

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HANNA HI-98195 Multi-parameter Waterproof Meter

HI-98195 Multi-parameter Waterproof Meter

£1,421.00 (exc. VAT)

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