ATAGO PAL-RI Digital Pocket Refractometer User Manual

Introduction

This manual provides essential instructions for the safe and effective use of the ATAGO PAL-RI Digital Pocket Refractometer. The PAL-RI is a compact, digital instrument designed for measuring the refractive index of various liquids. Please read this manual thoroughly before operating the device and keep it for future reference.

Figure 1: ATAGO PAL-RI Digital Pocket Refractometer. This image displays the white, handheld refractometer with a digital display showing "1.34" for refractive index and "20.3°C" for temperature. The device features a sample stage at the top, a "START" button, and a "ZERO" button, along with the ATAGO logo and "PAL-RI" model designation.

Safety Precautions

• Do not immerse the refractometer in water or other liquids.
• Avoid dropping or subjecting the device to strong impacts.
• Use only specified batteries.
• Keep the sample stage clean and free from scratches.
• Do not attempt to disassemble or modify the device.

Setup

1. Battery Installation

1. Open the battery compartment cover located on the back of the unit.
2. Insert two AAA alkaline batteries, ensuring correct polarity (+/-).
3. Close the battery compartment cover securely.

2. Initial Calibration (Zero Setting)

Before first use and periodically thereafter, perform a zero setting using distilled water.

1. Ensure the sample stage is clean and dry.
2. Apply 0.3 to 0.5 mL of distilled water onto the sample stage. Ensure the prism surface is fully covered.
3. Press the ZERO button. The display will show "0.0000" or "ZERO" briefly, then return to the measurement screen.
4. Wipe off the distilled water from the sample stage with a soft, clean cloth.

Note: Perform zero setting at the same ambient temperature as your samples for optimal accuracy.

Operating Instructions

1. Sample Preparation

• Ensure your sample is homogeneous and free of air bubbles or solid particles.
• Allow the sample to reach ambient temperature for accurate readings, especially if it differs significantly from the refractometer's temperature.

2. Taking a Measurement

1. Clean and dry the sample stage thoroughly.
2. Apply 0.3 to 0.5 mL of your sample onto the prism surface. Ensure the entire surface is covered without overflowing.
3. Close the daylight plate gently (if applicable, though not explicitly shown for PAL-RI, it's good practice for some refractometers to prevent evaporation and ensure even spread).
4. Press the START button. The measurement will be displayed within a few seconds.
5. Read the refractive index value and temperature from the digital display.

3. After Measurement

• Immediately wipe off the sample from the prism surface using a soft, clean, and lint-free cloth or tissue.
• If necessary, clean the prism with a small amount of distilled water and then dry it completely.
• Ensure no residue remains on the prism or sample stage.

Maintenance

Cleaning

• Always clean the sample stage immediately after each use to prevent sample residue from drying and hardening.
• Use a soft, lint-free cloth or tissue. For stubborn residues, a small amount of distilled water or a mild detergent solution can be used, followed by thorough drying.
• Do not use abrasive cleaners, solvents, or harsh chemicals as they may damage the prism or casing.

Storage

• Store the refractometer in a cool, dry place, away from direct sunlight and extreme temperatures.
• If storing for an extended period, remove the batteries to prevent leakage.

Troubleshooting

Specifications

Note: Specifications are subject to change without notice. The listed weight may refer to a component or be an approximate value.

Warranty Information

ATAGO products are manufactured under strict quality control. This product is typically covered by a limited warranty against defects in materials and workmanship for a specified period from the date of purchase. Please refer to the warranty card included with your product or visit the official ATAGO website for detailed warranty terms and conditions specific to your region.

Customer Support

For technical assistance, service, or inquiries regarding your ATAGO PAL-RI refractometer, please contact ATAGO customer support. Contact information can typically be found on the official ATAGO website or on the packaging of your product.

• Website: www.atago.net (General ATAGO website)
• Email: Refer to regional ATAGO website for specific contact emails.
• Phone: Refer to regional ATAGO website for specific contact numbers.