Multi-Function Water Quality Tester With pH, ORP, Temperature, Chlorine

Meet the JUANJUAN Multi-Function Water Quality Tester, a versatile handheld device designed to monitor essential water parameters with a single instrument. Available in configurations to suit your needs—from 2-in-1 up to 5-in-1 measurements—this tester covers Cl2, H2, ORP, pH, and Temperature for pools, hydroponics, and aquariums. Its digital, backlit display delivers precise readings, even in low light, while the adjustable models let you tailor the tool to your exact testing requirements.

Key benefits include accurate pH control (0–14.00 pH, 0.01 pH resolution, ±0.01 pH), ORP monitoring (±1999 mV, 1 mV resolution, ±2 mV), chlorine measurement (0.01–4.00 ppm), hydrogen testing (0–10000 ppb), and temperature (0–60°C, 0.1°C resolution). The probe requires careful handling: soak the probe in purified water for at least 1 hour before first use (the body is not waterproof). If results seem off after soaking, calibrate according to the included instructions. After testing, rinse the probe to maintain accuracy. For tap water testing, let the faucet run for 30 seconds before sampling to account for chlorine volatilization. All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Benefits & Tips

• Quickly diagnose pool chemistry or aquarium water quality to keep swimmers and aquatic life safe and comfortable by monitoring pH and residual chlorine in real time.
• Use in hydroponics to maintain optimal nutrient uptake by keeping water pH within ideal ranges while watching ORP and chlorine levels as part of maintenance routines.
• Choose the right configuration for your workflow: 2-in-1 for Cl2 and Temp, 3-in-1 for Cl2, H2, Temp, 4-in-1 for Cl2, H2, ORP, Temp, or 5-in-1 for Cl2, H2, ORP, PH, Temp. Calibrate regularly to ensure consistent results across environments.

Product specifications

• Brand: JUANJUAN
• Model Number: Water Quality Detector
• Display Type: DIGITAL with backlight
• Battery Included: No
• Backlight: Yes
• Origin: Mainland China
• Semi-finished product: No
• With Backlight Or Not: Yes
• Display mode: Liquid crystal digital display
• Screen size: 28×20 mm
• Waterproof class: IP65
• Working environment: 0–60°C (32.0–140.0°F), RH 100%
• Automatic shutdown: After five minutes
• Electrodes care: The electrodes need to be cleaned after use
• Electrical cells: 3×1.5V (LR44) batteries (not included)
• pH measuring range: 0–14.00 pH, resolution 0.01 pH, accuracy ±0.01 pH
• ORP measuring range: ±1999 mV, resolution 1 mV, accuracy ±2 mV
• Chlorine (Cl2) measuring range: 0.01–4.00 ppm, resolution 0.01 ppm, accuracy ±10% or ±0.01 ppm
• Hydrogen (H2) measuring range: 0–10000 ppb, resolution 2 ppb, accuracy ±10 ppb
• Temperature measuring range: 0–60°C, resolution 0.1°C, accuracy ±0.1°C
• Probe care: Soak before first use and rinse after testing

Package includes:

• 2 in 1: Tester × 1, Instruction Manual × 1, No powder
• 3 in 1: Tester × 1, Instruction Manual × 1, No powder
• 4 in 1: Tester × 1, Instruction Manual × 1, OPR Powder × 1
• 5 in 1: Tester × 1, Instruction Manual × 1, OPR Powder × 1, PH4.01 Powder × 1, PH6.86 Powder × 1, PH9.18 Powder × 1
• 5 in 1: Cl2, H2, ORP, PH, Temp
• 4 in 1: Cl2, H2, ORP, Temp
• 3 in 1: Cl2, H2, Temp
• 2 in 1: Cl2, Temp

Warnings / reminders: Soak the probe for at least 1 hour before first use (the body is not waterproof). If results are inaccurate after soaking, calibrate according to the instructions. Clean the probe with water after each use. For tap water measurement, let the faucet run for 30 seconds before sampling. 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.