Short Description

The Lutron PH-222 is a professional pen-type digital pH meter designed for fast and accurate measurement of pH and temperature in water-based solutions. Featuring a replaceable PE-12 pH electrode, automatic temperature compensation (ATC), IP67 waterproof construction, and 3-point auto calibration, it delivers reliable performance for laboratories, water treatment plants, aquariums, food processing, educational institutions, and industrial quality control. Its built-in memory function, data hold, and compact design make it ideal for both laboratory and field applications.

Key Features

• Professional Pen-Type Digital pH Meter
• Measures pH & Temperature
• Wide pH Measurement Range: 0.00 to 14.00 pH
• Temperature Measurement in °C & °F
• Automatic Temperature Compensation (ATC)
• 3-Point Auto Calibration (pH 4, 7 & 10)
• Replaceable PE-12 pH Electrode
• IP67 Waterproof Housing
• Dual LCD Display with Bar Graph
• Data Hold Function
• Maximum & Minimum Reading Memory
• Stores Up to 100 Data Points
• Auto Power Off
• Low Battery Indicator
• Microprocessor-Based Circuit
• Compact & Lightweight Design

Applications

Suitable for:

• Drinking Water Testing
• Water Treatment Plants
• Swimming Pools & Spas
• Aquariums & Fish Hatcheries
• Food & Beverage Industry
• Laboratories
• Schools & Universities
• Environmental Monitoring
• Agriculture & Hydroponics
• Pharmaceutical Industry
• Chemical Processing
• Quality Control

Technical Specifications

pH Measurement

Temperature Measurement

Calibration

Temperature Compensation

• Automatic Temperature Compensation (ATC)
• Built-in Thermistor Temperature Sensor

Data Logger

Display

• Dual LCD Display
• Bar Graph Indicator
• Data Hold Indicator
• Max/Min Display
• Low Battery Indicator

Measurement Functions

• pH Measurement
• Temperature Measurement
• Automatic Temperature Compensation
• Auto Calibration
• Data Hold
• Maximum Reading Recall
• Minimum Reading Recall
• 100-Point Memory
• Auto Power Off

Electrode

• Model: PE-12
• Replaceable Combination pH Electrode
• Built-in Temperature Sensor
• Waterproof Design

Sampling Time

• Approximately 0.8 Seconds

Operating Conditions

Operating Temperature

• 0°C to 60°C

Operating Humidity

• Less than 80% RH

Protection Rating

• IP67 Waterproof

Power Supply

• 4 × 1.5V AAA Batteries (UM-4)

Power Consumption

• Approximately 4.8 mA

Dimensions

• 186 × 40 × 32 mm

Weight

• Approximately 131 g (including electrode and batteries)

Construction

• High-Impact ABS Plastic Housing
• IP67 Waterproof Protection
• Replaceable PE-12 Electrode
• Microprocessor-Controlled Electronics

Standard Package Includes

• Lutron PH-222 Digital pH Meter
• PE-12 pH Electrode
• pH 7.00 Buffer Solution
• pH 4.00 Buffer Solution
• User Instruction Manual

Optional Accessories

• pH 10.01 Buffer Solution
• Replacement PE-12 Electrode
• Hard Carrying Case (CA-06)
• Soft Carrying Case (CA-52A)

Advantages

• Accurate pH & Temperature Measurement
• Automatic Temperature Compensation
• Waterproof IP67 Design
• 3-Point Automatic Calibration
• Built-in 100 Reading Memory
• Replaceable Electrode
• Compact Pen-Type Design
• Easy One-Hand Operation
• Fast Response Time
• Suitable for Laboratory & Field Applications

Industries Served

• Water Treatment
• Food & Beverage
• Aquaculture
• Agriculture
• Hydroponics
• Environmental Monitoring
• Pharmaceutical Industry
• Chemical Industry
• Educational Institutions
• Research Laboratories
• Quality Assurance