Calibration Fluids 

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  TDS Calibration Fluid 1382

  This PPM calibration solution is stablilized at 1382 PPM. Good for any Parts Per Million nutrient solution calibration.  Calibrate your meters frequently for accurate PPM readings.
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  Lab Grade Calibration Solution 1431 μS

  Lab-grade electrical conductivity (EC) calibration solution.
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  pH Down 1 Litre

  Uses phosphoric acid to lower the pH to the proper level. Lowering the pH of water or nutrient solution is simple. Just add small amounts of pH down to your nutes or water until your pH readings are on par. 
• 

  pH Up 1 Litre

  Raises the pH of freshwater. Ideal for hydroponic cultivation.  Raising the pH of water or nutrient solution is simple. Just add small amounts of pH up to your nutes or water until your pH readings are on par. 
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  Lab Grade 1000ppm TDS Calibration Fluid

  This buffer solution is needed to re-calibrate your EC (μS) or TDS (PPM) meter.
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  Lab grade pH 4.01 Calibration Fluid 250ml

  Used to calibrate any adjustable pH controller or monitor.  
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  Lab grade pH 7.00 Calibration Fluid 250ml

  Used to calibrate any adjustable pH controller or monitor.  All our pH meters get shipped with a free 100ml bottle of calibration fluid.
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  BlueLab PH Probe KCL Storage Solution 120ml

  The ideal way to store and hydrate your Bluelab pH probes or pens
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  BlueLab PH Probe KCI Storage Solution 250ml

  The ideal way to store and hydrate your Bluelab pH probes or pens.
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  BlueLab pH 4 Calibration Solution 500ml
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  BlueLab pH 7 Calibration Solution 500ml
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  BlueLab 2.77 EC Calibration Solution 500ml
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  BlueLab pH 7 Calibration Solution 250ml