TDS/Calibration Solutions

TDS/Calibration Solutions products are designed to keep your water testing meters performing at their best. These solutions help you accurately calibrate Total Dissolved Solids (TDS) and other measuring devices, ensuring your readings remain precise and trustworthy. Perfect for both professional and everyday use, TDS/Calibration Solutions make it easy to maintain confidence in your water quality results—whether you’re testing drinking water, aquariums, or industrial systems.

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39 products

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Hanna Instruments HI-7032L 1382ppm TDS Solution, 500mL
Hanna Instruments
Hanna Instruments HI-7032L 1382ppm TDS Solution, 500mL Sale price£32.68 Regular price£34.40
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Hanna Instruments HI-97702-11CalCheck Standards for Copper HR 0.00 to 2.00 mg/L ppm
Hanna Instruments
Hanna Instruments HI-97702-11CalCheck Standards for Copper HR 0.00 to 2.00 mg/L ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97706-11 CAL Check™ standards for Phosphorus, 0.0 and 7.5 ppm
Hanna Instruments
Hanna Instruments HI-97706-11 CAL Check™ standards for Phosphorus, 0.0 and 7.5 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97705-11 CAL Check standards for Silica LR - 0.0 and 1.00 ppm
Hanna Instruments
Hanna Instruments HI-97705-11 CAL Check standards for Silica LR - 0.0 and 1.00 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97708-11 CAL Check™ standards for Nitrite HR, 0.0 and 75 ppm
Hanna Instruments
Hanna Instruments HI-97708-11 CAL Check™ standards for Nitrite HR, 0.0 and 75 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97707-11 CAL Check™ standards for Nitrite LR, 0.0 and 0.2 ppm
Hanna Instruments
Hanna Instruments HI-97707-11 CAL Check™ standards for Nitrite LR, 0.0 and 0.2 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97709-11 CAL Check™ standards for Manganese HR, 0.0 and 10 ppm
Hanna Instruments
Hanna Instruments HI-97709-11 CAL Check™ standards for Manganese HR, 0.0 and 10 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97712-11 CAL Check™ standards for Aluminium, 0.0 and 0.50 ppm
Hanna Instruments
Hanna Instruments HI-97712-11 CAL Check™ standards for Aluminium, 0.0 and 0.50 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97714-11 CAL Check™ standards for Cyanide, 0.0 and 0.100 ppm
Hanna Instruments
Hanna Instruments HI-97714-11 CAL Check™ standards for Cyanide, 0.0 and 0.100 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97717-11 CAL Check™ standards for Phosphate HR, 0.0 and 15.0 ppm
Hanna Instruments
Hanna Instruments HI-97717-11 CAL Check™ standards for Phosphate HR, 0.0 and 15.0 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97718-11 CAL Check™ standards for Iodine, 0.0 and 2.5 ppm
Hanna Instruments
Hanna Instruments HI-97718-11 CAL Check™ standards for Iodine, 0.0 and 2.5 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97719-11 CAL Check™ standards for Magnesium Hardness, 0.0 and 1.00 ppm
Hanna Instruments
Hanna Instruments HI-97719-11 CAL Check™ standards for Magnesium Hardness, 0.0 and 1.00 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97726-11 CAL Check™ standards for Nickel HR, 0.0 and 3.5 ppm
Hanna Instruments
Hanna Instruments HI-97726-11 CAL Check™ standards for Nickel HR, 0.0 and 3.5 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97730-11 CAL Check™ standards for Molybdenum, 0.0 and 10.0 ppm
Hanna Instruments
Hanna Instruments HI-97730-11 CAL Check™ standards for Molybdenum, 0.0 and 10.0 ppm Sale price£261.35 Regular price£275.10
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Hanna Instruments HI-97731-11 CAL Check™ standards for Zinc, 0.0 and 1.50 ppm
Hanna Instruments
Hanna Instruments HI-97731-11 CAL Check™ standards for Zinc, 0.0 and 1.50 ppm Sale price£261.35 Regular price£275.10

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