Apera Instruments SX620 pH Pen Tester Kit

Product Overview

The Apera Instruments SX620 pH Pen Tester is engineered for precise and reliable pH measurements in a compact, user-friendly design. It is an economical solution for a wide range of liquid testing applications, including hydroponics, aquaculture, water treatment, and beverage production. Its slim 8mm probe is replaceable and ideal for use with test tubes.

Key Features

• 0.01 pH accuracy for precise readings.
• Automatic 3-point calibration for enhanced accuracy.
• Automatic Temperature Compensation (ATC) from 0-60°C.
• Slim, replaceable probe suitable for test tubes.
• Intelligent functions: switchable temperature units (°F/°C), automatic power-off, low battery alarm, and pH probe invalidation reminder.
• IP57 waterproof and dustproof rating, allowing it to float if dropped in water.

Package Contents

• 1 x Apera Instruments SX620 pH Pen Tester
• 1 x SX620 pH Pen Kit (includes tester)
• 3 x Premixed Calibration Solutions (pH 4.00, pH 7.00, pH 10.01)
• 1 x 3M KCL Storage Solution
• 2 x CR2032 Lithium Batteries (pre-installed or included)
• 1 x Portable Carrying Case
• 1 x Lanyard

The complete kit, including the SX620 pH pen tester, calibration solutions, storage solution, and a carrying case.

Setup

Battery Installation

The SX620 pH Pen Tester uses two CR2032 lithium batteries. These are typically pre-installed or included in the kit. To install or replace batteries, locate the battery compartment, usually at the top of the meter, and follow the markings for correct polarity.

Initial Probe Preparation

Before first use, or after prolonged storage, remove the protective cap from the probe. Rinse the probe with distilled water. If the probe has dried out, soak it in 3M KCL storage solution for at least 30 minutes to rehydrate the electrode. Ensure the probe is fully immersed in the storage solution.

The Apera Instruments SX620 pH Pen Tester, showing its digital display and probe.

Operation

Powering On/Off

Press the power button (usually marked with a power symbol) to turn the meter on. Press and hold the power button for a few seconds to turn it off.

Calibration

For accurate readings, regular calibration is essential. The SX620 features 3-point automatic calibration.

1. Prepare the calibration solutions (pH 7.00, pH 4.00, pH 10.01).
2. Rinse the probe with distilled water and blot dry.
3. Immerse the probe in the pH 7.00 buffer solution. Press the CAL button. The meter will automatically recognize the solution and calibrate. Wait for the reading to stabilize and indicate completion.
4. Rinse the probe again.
5. Immerse the probe in the pH 4.00 buffer solution. Press CAL. Wait for stabilization.
6. Rinse the probe again.
7. Immerse the probe in the pH 10.01 buffer solution. Press CAL. Wait for stabilization.
8. After successful 3-point calibration, the meter is ready for use.

pH Measurement

To take a measurement:

1. Ensure the meter is calibrated.
2. Rinse the probe with distilled water and blot dry.
3. Immerse the probe into the sample solution. Ensure the probe tip is fully submerged.
4. Gently stir the solution to ensure homogeneity.
5. Wait for the reading on the display to stabilize. The meter will automatically compensate for temperature (ATC).
6. Record the pH and temperature readings.
7. After measurement, rinse the probe thoroughly with distilled water.

The SX620 pH Pen Tester being used to measure pH in a slim test tube, demonstrating its compact design.

Temperature Unit Switching

The meter can display temperature in Celsius (°C) or Fahrenheit (°F). Refer to the specific button or menu option in your manual for switching between these units. Typically, this involves a short press of a dedicated button or a combination of buttons.

Maintenance

Cleaning the Probe

After each use, rinse the probe thoroughly with distilled water to remove any sample residue. Do not wipe the glass bulb, as this can cause static electricity and damage the sensitive membrane. If the probe becomes contaminated with oil or grease, clean it with a mild detergent solution, then rinse thoroughly with distilled water.

Probe Storage

Proper storage is crucial for probe longevity. Always store the probe in 3M KCL storage solution. Ensure the protective cap is filled with storage solution and securely placed over the probe tip. NEVER store the probe in distilled water or deionized water, as this will deplete the reference electrolyte and permanently damage the electrode.

Probe Invalidation Reminder

The meter features an intelligent function that reminds you when the pH probe may need replacement for optimal performance. Pay attention to this reminder and consider replacing the probe if readings become unstable or inaccurate despite proper calibration and cleaning.

Battery Replacement

When the low battery alarm appears on the display, replace the CR2032 lithium batteries promptly to ensure continuous operation and accurate readings.

Troubleshooting

• Inconsistent or Unstable Readings: This often indicates a dry or contaminated probe. Rehydrate the probe in 3M KCL storage solution for several hours or overnight. Clean the probe thoroughly. Ensure proper calibration.
• Meter Does Not Turn On: Check battery installation and ensure batteries are not depleted. Replace batteries if necessary.
• Calibration Failure: Ensure calibration solutions are fresh and not expired. Verify the probe is clean and properly hydrated. Repeat the calibration process carefully.
• Low Battery Alarm: Replace the CR2032 lithium batteries immediately.
• Probe Invalidation Reminder: This indicates the probe's lifespan is nearing its end. Consider replacing the probe for continued accurate performance.

Specifications

Warranty and Support

Apera Instruments products are designed and manufactured to high quality standards. This product is covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official Apera Instruments website.

For assistance, please contact Apera Instruments customer support directly.