• Heavy duty
• Equipped with scale measurement that provides direct reading
• Approved by strict quality and safety standards
• Durable and built to last long
• Heavy-duty and lightweight with its aluminum construction
• Easy to focus and calibrate
• Accurate testing results guaranteed
• Made with the highest and finest quality of aluminum & rubber that makes it lightweight
• Cushioned with soft & comfortable non-slip rubber
• Extremely easy-to-use and calibrate

METHOD OF OPERATION

1. Prepare: Aim the front end of the refractometer in the direction of a bright light, and adjust the adjusting

ring of diopter(5) until the reticle can be seen clearly.

2. Calibration: Open the cover plate(2), drop one drop of calibration solution on the prism(1), rotate and

adjust the calibration screw(3) to make the light/blue boundary coincide with reference line 1.333.

3. Measurement:Open the cover plate(2),clean the surface of prism with a piece of soft cotton flannel,

Drop 1~2 drops of the solution to be measured. Close the cover plate, and press it lightly, then read the

corresponding scale of light and dark boundary. The reading is the refractive index of the measured

solution.

4. After measurement, clean the surface of prism and cover plate with moist gauze, and it should be

stored carefully.

A refractometer is an instrument that can measure the concentration of aqueous solution

by measuring it's refractive index. All water based solution can make lightbend. The bending of light

increases at a rate proportional to the increasingsolution concentration. The hand-held refractometer is a

precise optical instrument. It is characterized

by small volume, light weight, graceful shape and easy to operate. Therefore itcan be used by all sides.

Packing list:

• 1 x Refractometer
• 1 x Pipette
• 1 x Screw driver
• 1 x Cleaning cloth
• 1 x English Instruction manu

​

Shenzhen Yieryi Technology Co., Ltd Company Profile

Company Overview

Shenzhen Yieryi Technology Co., Ltd was established in 2012 and is located in the Economic Development Zone of Shenzhen City, Guangdong Province. Leveraging our superior geographic location, convenient transportation facilities, outstanding research and development capabilities, exquisite craftsmanship, and comprehensive testing equipment, we are dedicated to providing high-quality measurement instruments and solutions to customers worldwide.

Our Products

As a professional manufacturer of measurement instruments, Shenzhen Yieryi Technology Co., Ltd primarily produces the following products:

· Portable and Digital Refractometers

· Pen-Type and Online Monitoring pH Meters

· DO Meters, TDS Meters, ORP Meters, EC Water Quality Testers

· Soil Testers

· Temperature and Humidity Meters

Our products are widely used in various fields, including beer brewing, liquor production, sugar manufacturing, fruit juice processing, agriculture, aquarium maintenance, hydroponics, environmental protection, food safety, education, military, and technology, catering to the diverse needs of different industries.

Why Choose Shenzhen Yieryi Technology Co., Ltd

Choosing Shenzhen Yieryi Technology Co., Ltd means you will enjoy the following unique advantages:

1. Excellence in Product Quality

· Strict Quality Control: All our products are certified under the ISO9001:2008 quality management system and possess ROHS, CE, and FCC certifications. Some products also hold design patents. Every product undergoes rigorous testing and calibration before leaving the factory to ensure high precision and reliability.

· High-Quality Materials and Craftsmanship: Located in Shenzhen’s Economic Development Zone, we are equipped with advanced manufacturing facilities and an experienced craftsmanship team, ensuring that each product boasts superior durability and performance.

2. Comprehensive Product Line

· Diverse Measurement Instruments: We specialize in manufacturing a wide range of products, including portable and digital refractometers, pen-type and online monitoring pH meters, TDS meters, ORP meters, EC testers, DO meters, soil pH and temperature & humidity meters, among others, to meet the diverse needs of various industries.

· Wide Application Fields: Our products are extensively used in beer brewing, liquor production, sugar manufacturing, fruit juice processing, agriculture, aquarium maintenance, hydroponics, environmental protection, food safety, education, military, and technology sectors, ensuring that you can find suitable solutions across different industries.

3. Technological Innovation and R&D

· Strong R&D Team: We boast a professional technical research and development team that continuously pursues technological innovation. We collaborate with multiple research institutions to develop new products, ensuring that our offerings remain at the forefront of the industry.

· Patent Protection: Some of our products feature unique designs and functionalities protected by design patents, enhancing their competitiveness and market uniqueness.

4. High-Quality Customer Service

· Professional Customer Support: Our customer service team is dedicated to providing timely and effective support, ensuring that you have peace of mind during the entire usage process.

· Personalized Solutions: We offer customized products and services tailored to the specific needs of our clients, accommodating various special requirements.

· Global Logistics Network: With a well-established global distribution system, we ensure that our products are delivered quickly and safely to customers around the world.

5. Reliable Market Reputation

· Stable Global Market Presence: Since starting our export business in 2013, our products have been successfully exported to Europe, America, Southeast Asia, and the Middle East, achieving an annual sales volume of USD 5-10 million. We have earned the trust and praise of customers worldwide.

· Brand Influence: Our brand “YIERYI,” registered in 2016, has consistently focused on the theme of health. With a design that is simple, stylish, and portable, we are committed to bringing health concepts into every home and every corner of the world.

6. Sustained Corporate Spirit

· Unity, Diligence, Exploration, and Innovation: We firmly adhere to the corporate spirit of “Unity, Diligence, Exploration, and Innovation,” continuously striving for excellence, exceeding customer expectations, and building long-term partnerships.

Our Vision

Shenzhen Yieryi Technology Co., Ltd is committed to driving business growth and success for our clients through continuous innovation and exceptional service. We aim to establish the “YIERYI” brand as a globally recognized health technology brand, promoting health concepts into every home and every corner of the world.

Conclusion

By choosing Shenzhen Yieryi Technology Co., Ltd, you will receive high-quality products, advanced technical support, comprehensive customer service, and a reliable partnership. Let’s work together to create a prosperous future and move towards a more prosperous and sustainable tomorrow!