Pen Type Soil Moisture Tester , Electronic Redox Tester For Water Quality Analysis

YIERYI LED Pen-Type Digital ORP Meter ORP-969 electronic redox Tester Water Quality Analysis

Specifications

Features:

• With a backlit display, the reading is more clear and convenient
• Use to measure the amount of Oxidation Reduction Potential (ORP) level.
• The tendency of the solution to either gain or lose electrons.
• Clear LCD with backlight.
• Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems.
• Mini small size, easy to carry with.
• Compact and portable pen-type design.
• Easy to use and provides instant display of results.
• Case waterproof design, waterproof rating IP55.

Package list:

• 1 * TDS Meter Tester(without retil box)
• 1 * User Manual
• 1 * Bolt driver

calibration

• 1. Activate the ORP meter in a boiled water for several hours.
• 2. Insert the ORP meter into a 256 mV standard solution (4.01 standard solution containing quinone hydroquinone reagent) and shake gently.
• 3. Adjust the calibration potentiometer with a small screwdriver until the LCD shows 265 mV.
• 4. Clean the electrode with distilled water.

Note: The instrument electrode must be periodically (15 days) into the saturated potassium chloride solution soak for several hours to ensure the accuracy of the measurement.

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