YD300 Portable Water Hardness Meter Kit


  • Adopting electrode method to test hardness, having the same accuracy as edta titration method, yet much more convenient
  • Patented 601-S 3-in-1 water hardness combination electrode: combines measuring electrode, reference electrode, and temperature electrode in one
  • Intelligent chip design produces stable potential, fast response rate, and convenient use;
  • 99 groups of data storage; automatic calibration and temperature compensation (atc), auto-lock and power-off
  • Portable IP57 waterproof design equipped as a full kit with a rugged carrying case; suitable for both lab and field test
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The Apera Instruments’YD300 Portable  is designed for quick & accurate measurements of Water Hardness (the concentration of calcium ions Ca2+ and magnesium ions Mg2+). The YD300 comes equipped with a patented 601 water hardness combination electrode that is proven to produce the same accuracy as the traditional EDTA Volumetric Method but in a much more convenient manner. Unlike the traditional EDTA Method, There is no need for probe stirring or adding reagents during tests, and you can directly measure your sample solutions’ ion concentration just like pH testing.

WARRANTY of YD300 Portable

We warrant this instrument to be free from defects in material and workmanship and agree to repair or replace free of charge, at the option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged product attributable to the responsibility of APERA INSTRUMENTS, LLC for a period of TWO YEARS for the instrument and SIX MONTHS for the probe from the delivery.

This limited warranty does NOT cover any issues due to:
  • Accidental damage
  • Improper use
  • Normal wear and tear
  • Transportation
  • Storage
  • Failure to follow the product instructions
  • Unauthorized maintenance, modifications, combination or use with any products, materials, processes, systems or other matter
  • Unauthorized repair
  • External causes such as accidents, abuse, or other actions or events beyond our reasonable control.
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Calibration Mode

  • (a) B1/B2 Calibration—using B1 and B2 Calibration Solution,suitable for <2.00×10-2 mmol/L low concentration water quality,for example, boiler water.
  • (b) B2/B3 Calibration—using B2 and B3 Calibration Solution,suitable for general water quality.
  • Temperature Measuring Range: 0-60℃ (32 – 140ºF)
  • Resolution: 0.1℃
  • Accuracy: ±0.5℃


Measuring Range 0-60℃ (32 – 140ºF)
Resolution 0.1℃
Accuracy ±0.5℃


Other parameters

Data Storage 99 groups
Content Storage serial number of measuring value, measuring value, units, temperature and calibration way
Power Two AA Batteries(1.5V×2)
Dimension and Weight Meter:(65×120×31)mm/180g; Carry Case: (255×210×50)mm/790g
Quality and Safety Certificate CE, RoHS


Working conditions

Ambient Temperature 5-35℃ (41-95ºF)
Ambient Humidity ≤85%
IP Grade IP57 Waterproof and Dustproof

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YD300 Portable Water Hardness Meter Kit

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YD300 Portable Water Hardness Meter Kit

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