Pocket Type pH Meter SK-631PH SK Sato

Pocket Type pH Meter SK-631PH SK Sato

Compact and Reliable pH & Temperature Meter for Everyday Use

The SK-631PH Pocket Type pH Meter by SK Sato is a compact and user-friendly instrument designed for quick, on-the-go pH and temperature measurements. With a three-point calibration system, automatic temperature compensation, and waterproof IPX4 rating, this meter is ideal for hobbyists, professionals, and educators who require simple yet accurate monitoring in farming, gardening, aquariums, and field conditions.

Product Features

• Three-point calibration: Enables calibration at pH 4.01, 6.86, and 10.01 for improved measurement accuracy

• pH and temperature measurement: Monitors both values simultaneously

• Auto temperature compensation: Ensures stable readings despite varying sample temperatures

• Waterproof construction: IPX4-rated for splash resistance, safe for use with wet hands

• Handy and compact: Slim and lightweight design for easy portability and operation

• Hold function: Freezes the displayed value for easy reading and recording

• Auto power-off: Conserves battery life when not in use

• Fixed sensor design: Integrated glass sensor for ease of use (non-replaceable)

Applications

• Agriculture: Ideal for soil pH testing and nutrient management in farms and greenhouses

• Gardening: Useful for maintaining healthy soil conditions in home gardens

• Aquaculture and aquariums: Helps monitor water quality for optimal fish and plant health

• Education: A simple, intuitive tool for student labs and classroom demonstrations

• Fieldwork: Portable design makes it suitable for outdoor sampling and environmental testing

Specifications

• Model number: SK-631PH

• Catalog number: 6418-00

• Measuring range:

  • pH: 2.0 to 12.0

  • Temperature: 0.0 to 50.0°C

• Accuracy:

  • pH: ±0.5

  • Temperature: ±1.0°C

• Resolution:

  • pH: 0.1

  • Temperature: 0.5°C

• Calibration: Three-point (pH 4.01, 6.86, 10.01 at 25°C)

• Functions: Hold display, auto power-off, automatic temperature compensation

• Detectors:

  • pH: Glass electrode with non-refillable KCl solution

  • Temperature: Thermistor

• Waterproof rating: IPX4 (splash resistant)

• Operating environment: 0 to 50°C

• Materials:

  • Main body: ABS resin

  • Sensor electrode: Glass

• Dimensions: 36 mm (W) × 150 mm (H) × 25 mm (D)

• Weight: 65 g (including batteries)

• Power supply: 4 × LR44 button cell batteries

• Standard accessories: 4 × LR44 batteries, instruction manual

Calibration Solutions (sold separately)

Standard Calibration Solutions:

• pH 4.01 – Phthalate solution (500 mL, Cat. No. 6401-10)

• pH 6.86 – Neutral phosphate solution (500 mL, Cat. No. 6402-10)

• pH 10.01 – Carbonate solution (500 mL, Cat. No. 6403-10)

• pH 9.18 – Borate solution (500 mL, Cat. No. 6404-10)

JCSS Certified Calibration Solutions:

• pH 4.01 – Cat. No. 6401-00

• pH 6.86 – Cat. No. 6402-00

• pH 10.01 – Cat. No. 6403-00

• pH 9.18 – Cat. No. 6404-00

Usage Cautions

• Avoid using the sensor with organic solvents, oils, adhesives, surfactants, strong acids (pH 0–2), or strong alkalis (pH 12–14)

• Readings in pure or tap water may fluctuate due to low conductivity

• For food or beverage testing, immerse the sensor at least 3 cm deep in a separate sample container and do not consume the sample after testing

• Handle the glass sensor carefully to prevent breakage or injury

The SK-631PH Pocket Type pH Meter is a simple yet effective solution for users who require fast and reliable pH readings in the field or at home. With its waterproof design and temperature measurement function, it’s an essential tool for everyday pH monitoring tasks.