5 in 1 Water Quality Tester: pH, Cl2, ORP, Temp for Pools

The 5-in-1 Water Quality Tester is a versatile, backlit pen designed for precise monitoring of essential water parameters in pools, drinking water, aquariums, and aquaculture. It measures pH, free chlorine (Cl2), ORP, hydrogen (H2), and temperature, delivering quick, reliable readings to help you keep water safe, balanced, and enjoyable.

This listing features the 5-in-1 model with backlight and a powder pack. Please note the device does not come with a battery; it requires 3×1.5V LR44 cells (not included). The tester is IP65 waterproof, uses a liquid crystal display with backlight for easy readings in any lighting, and automatically shuts down after five minutes to save power. The electrodes should be cleaned after each use to maintain accuracy. Ready-to-use accuracy is paired with a compact 28×20 mm LCD display for clear visibility on the go. Origin: Mainland China.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

At intercyprus.com since 2002 — trusted for quality and reliability.

Benefits & Tips

• Keep pool water balanced by regularly checking pH and chlorine levels to maintain clear, safe swimming conditions.
• Monitor ORP and pH in drinking water and aquariums to ensure sanitizer effectiveness and a healthy habitat for your aquatic life.
• Use the backlit display for easy night-time testing and store the powder pack for convenient maintenance in one complete kit.

Product specifications

• Model: 5-in-1 water quality pen backlight (pH/Cl2/H2/ORP/Temperature)
• Measuring ranges:
  • PH: 0–14.00 pH
  • ORP: ±1999 mV
  • CL2: 0.01–4.00 ppm
  • H2: 0–10000 ppb
  • TEMP: 0–60°C
• Resolutions:
  • pH: 0.01 pH
  • ORP: 1 mV
  • CL2: 0.01 ppm
  • H2: 2 ppb
  • TEMP: 0.1°C
• Accuracy:
  • pH: ±0.01 pH
  • ORP: ±2 mV
  • CL2: ±10% reading value, ±0.01 ppm
  • H2: ±10 ppb (±0.01 ppb)
  • TEMP: ±0.1°C
• Temperature compensation: Auto 0–60°C
• Display: Liquid crystal digital display with backlight (28×20 mm)
• Waterproof class: IP65
• Battery: Not included (requires 3×1.5V LR44 cells)
• Working environment: 0–60°C, RH 100%
• Automatic shutdown: After five minutes
• Notes: The electrodes need to be cleaned after use
• Origin: Mainland China

Package includes:

• 5-in-1 water quality pen backlight (no battery)
• Powder pack

Warnings / Reminders

• Ensure electrodes are cleaned after each use to maintain accuracy.
• Operate within the specified range: 0–60°C for all measurements.
• Battery not included—install three LR44 cells before use.