HM Digital COM-300L Waterproof pH/EC/TDS/Temp Meter

Product Summary:
HM Digital COM-300L is a premium, IP-67 waterproof handheld meter designed to measure pH, EC, TDS, and temperature with precision. Ideal for water testing in labs, aquaculture, hydroponics, and industry.

Key Features:

• Measures pH, EC, TDS, and Temperature

• Wide pH range: 0–14; EC range up to 9.99 mS

• Dual TDS scales: 0.7 & 0.5

• Temperature range: 0–55 °C

• Detachable platinum electrodes & glass pH sensor

• IP-67 Waterproof body; floats in water

• Auto temperature compensation (ATC)

• 1-Year Warranty included

Applications:

• Water Purification and Filtration

• Hydroponics and Agriculture

• Aquaculture and Fish Farming

• Laboratory and Research Use

• Pools, Spas & Industrial Water Testing

Product Benefits:

• Compact, portable, and easy to use

• Accurate multi-parameter analysis in one device

• Durable and waterproof for field and lab use

• Saves cost by eliminating the need for multiple meters

• Non-linear conversion ensures accuracy across solutions

FAQs:

Q1: Can the COM-300L meter be used for both freshwater and saltwater testing?
A1: Yes, it is suitable for both types and allows EC to TDS conversions for KCl, 442™, and NaCl solutions.

Q2: Is the sensor replaceable or fixed?
A2: The COM-300L comes with detachable platinum and pH glass sensors, making replacement easy.

Q3: How long do the batteries last?
A3: With normal use, the included AAA batteries last several months before needing replacement.