VEVOR pH Meter, Accurate pH/EC (Conductivity)/TDS (ppm) Multi-Parameter Measurement, IP68 Waterproof Probe, Pocket Tester Kit with Calibration Powder Packets, VA Display, for Water Quality Testing

Digital pH Meter for Water with 0–14 pH Range and ±0.1 Accuracy for Reliable Readings 

With a precision of 0.01 pH and an accuracy of ±0.1 pH, the VEVOR digital pH meter for water measures across the whole 0–14 pH scale. It can handle solutions that are very acidic or very basic. The meter's 0.01 pH resolution lets it detect small pH changes that instruments with a coarser 0.1 resolution would miss. This makes it suitable for tracking gradual pH changes and identifying readings that fall outside the target range. 

The meter gives readings accurate to within 0.1 pH, which is good enough for the practical water quality monitoring jobs it was designed for, like ensuring drinking water is safe, balancing pool and spa water, checking aquarium water chemistry, and managing nutrient solutions for plants. Its compact ABS housing (1.6 × 1.6 × 7.3 in) fits easily into a pocket, lab coat, or toolkit for convenient field testing. 

3-in-1 Measurement of pH, EC Conductivity, and TDS in a Single Pocket Device 

This digital pH meter for water does more than just measure pH. It also measures electrical conductivity (EC) over 0–9990 μS/cm and total dissolved solids (TDS) over 0–9990 ppm. This means that you do not need separate EC and TDS probes or meters to get all three water quality parameters. EC measurement indicates the concentration of dissolved ions in the water. This information is important for maintaining balanced pool and spa water, ensuring nutrient solutions work well in hydroponic systems, and controlling the conductivity in industrial water treatment processes, where it is the primary variable.

When you measure TDS in ppm, you get the same information about dissolved solids, but in a concentration unit that people who check the quality of drinking water and aquarium water are more familiar with. Reading all three parameters, pH, EC, and TDS, from the same test dip eliminates the need to bring multiple instruments to a test point. 

1 to 3-Point Auto Calibration with Three Standard Powder Packets for Measurement Accuracy 

The meter can be automatically calibrated at 1, 2, or 3 reference points by using the calibration powder packets that come with it. These packets are mixed with distilled water to prepare standard buffer solutions at pH 4.00, 6.86, and 9.18. These three reference values cover the low, mid, and high parts of the measurement range. This lets you use a 3-point calibration instead of a single-point calibration that only works near the reference pH, helping maintain accuracy across the full pH range. 

The auto-calibration process detects the buffer pH when the probe is submerged, makes the correction, and confirms the calibration point without needing target values to be entered by hand. This reduces the risk of calibration errors caused by entering incorrect values. The calibration materials for the first calibration session and any future recalibrations are in the powder packets that come with the meter. 

Built-In ATC Across 0.1–60°C for Temperature-Compensated Readings in Any Environment 

Automatic temperature compensation (ATC) continuously monitors the sample temperature over the range of 0 to 60°C (32 to 140°F) and adjusts the pH reading to the value the sample would produce at the standard reference temperature. This resolves the problem of electrode potential changing with temperature, which causes pH readings to drift as sample temperature changes. 

Users do not have to enter the sample temperature or apply a correction factor to the raw reading for the ATC function to work. The meter performs this task automatically and displays the temperature-corrected pH value directly on the screen. It works automatically in all of these situations, so you do not have to change how you set the readings for each one.

Digital pH Meter for Water with IP68 Probe and VA Backlit Display for Field Use 

The probe for this digital pH meter for water carries an IP68 ingress protection rating, confirming full dust exclusion and the ability to withstand continuous immersion in water beyond the depths and durations typical of normal meter use. This means the user can take readings by dipping the probe directly into tanks, ponds, reservoirs, and open vessels without being as careful as with unrated probes.

The VA display with backlight ensures clear, high-contrast readout in all lighting conditions, including dimly lit equipment rooms, basement utility spaces, and outdoor testing in bright sunlight without requiring a separate light source to read the measurement. 

Suitable for Drinking Water, Pools, Aquariums, Hydroponics, and Food Processing 

The 0–14 pH range, 0–9990 ppm TDS range, and 0–9990 μS/cm EC range measure water quality parameters useful for many testing tasks in home, business, and scientific settings. In drinking water testing, pH and TDS readings help monitor water quality. Monitoring pH is the most important chemistry control parameter for maintaining pools and spas because it affects how well disinfectants work and how comfortable bathers are.

Aquarium water chemistry monitoring checks pH, EC, and TDS levels to determine whether the water is suitable for the fish and plants in the tank. These levels change when the water evaporates, when the fish eat, when waste builds up, and during water changes. EC checks whether the nutrient solution has the right concentration for the plant's growth stage in hydroponics, while pH checks whether nutrients are available at the roots.