High-Precision Laboratory Refractometers & Digital Brix Testers

As a premier ISO-certified B2B manufacturer of physical property testing instrumentation, Hangzhou Qiwei Instrument Co., Ltd. produces commercial-grade Laboratory Refractometers, Digital Abbe Refractometers, and Handheld Brix Meters engineered for food & beverage, pharmaceutical, chemical, and petrochemical testing laboratories.

Equipped with high-durability optical sapphire prisms, automatic temperature compensation (ATC), and high-resolution CCD optical sensors, our refractometers deliver rapid, accurate refractive index (nD) and sugar content (Brix %) measurements across liquid and semi-solid samples.

Get Bulk Wholesale Quote Download Refractometer Specs

$Pocket Digital Brix Refractometer$

Pocket Digital Brix Refractometer
Model: PAL-101/102, PAL-103/105, PAL-106/107, PAL-108
Resolution: Brix: 0.1%; Temperature: 0.1℃
Ambient Temperature: 10~40 ℃
Sample Volume: 0.3 mL
$Digital Salinity Refractometer$

Digital Salinity Refractometer
Model: PAL-104
Measuring Range: Salinity: 0.0~28.0%; Temperature: 10~100℃
Resolution: Salinity: 0.1%; Temperature: 0.1℃
Accuracy: Salinity: ±0.2%; Temperature: ±1℃
Alcohol Hydrometer
Model: PAL-109
Measuring Range: Alcohol: 0~75.0%; Temperature: 20 ~ 23℃
Resolution: 1% VOL; Temperature: 1℃
Ambient Temperature: 20 ~ 23℃
Alcohol Tester
Model: PAL-109D
Measuring Range: Alcohol: 0~60%; Temperature: 20 ~ 23℃
Resolution: 1% VOL; Temperature: 1℃
Ambient Temperature: 20 ~ 23℃
$Digital Sugar Refractometer$

Digital Sugar Refractometer
Model: PAL-101
Measuring Range: Brix: 0.0~32.0% (PAL-101); Temperature: 10~100℃
Resolution: Brix: 0.1%; Temperature: 0.1℃
Accuracy: Brix: ±0.2%; Temperature: ± 1℃
$Handheld Digital Brix Refractometer$

Handheld Digital Brix Refractometer
Model: PAL-102
Measuring Range: Brix: 0.0~53.0% (PAL-102); Temperature: 10~100℃
Resolution: Brix: 0.1%; Temperature: 0.1 ℃
Accuracy: Brix: ±0.2%; Temperature: ± 1 ℃
Portable Digital Brix Meter
Model: PAL-103
Measuring Range: Brix: 0.0~32.0% (PAL-103); Temperature: 10~40℃
Resolution: Brix: 0.1%; Temperature: 0.1 ℃
Accuracy: Brix: ±0.5%; Temperature: ± 1 ℃
$Digital Refractometer for Sugar Content$

Digital Refractometer for Sugar Content
Model: PAL-105
Measuring Range: Brix: 0.0~53.0% (PAL-105); Temperature: 10~40℃
Resolution: Brix: 0.1%; Temperature: 0.1℃
Accuracy: Brix: ±0.5% Temperature: ± 1℃
Fruit Sweetness Tester
Model: PAL-106
Measuring Range: Brix: 0.0~32.0% (PAL-106); Temperature: 10~40℃
Resolution: Brix: 0.1%; Temperature: 0.1℃
Accuracy: Brix: ±0.2%; Temperature: ± 1℃
$Handheld Digital Refractometer$

Handheld Digital Refractometer
Model: PAL-107
Measuring Range: Brix: 0.0~53.0% (PAL-107); Temperature: 10~40℃
Resolution: Brix: 0.1%; Temperature: 0.1℃
Accuracy: Brix: ±0.2%; Temperature: ± 1℃
Digital Brix Tester with ATC
Model: PAL-108
Measuring Range: Brix: 0.0~82.0%; Temperature: 10~40℃
Resolution: Brix: 0.1%; Temperature: 0.1℃
Accuracy: Brix: ±0.1%; Temperature: ± 1℃
Digital Salinity Analyzer
Model: PAL-104
Measuring Range: Salinity: 0.0 ~ 28.0%; Temperature: 10 ~ 100℃
Resolution: Salinity: 0.1%; Temperature: 0.1℃
Accuracy: Salinity: ±0.2%; Temperature: ±1℃

First 12 Last

Explore Our Refractometer Series

Versatile automatic benchtop Abbe refractometers, digital handheld Brix meters, and optical refractometer instruments designed for precision quality control.

$Handheld Digital Brix Refractometer$

1. Automatic Digital Abbe Refractometers

High-accuracy benchtop digital Abbe refractometers equipped with Peltier temperature control, high-resolution color touchscreen, and automatic measurement of refractive index (nD) and Brix.

Refractive Index Range: 1.3000 to 1.7000 nD ($\pm 0.0002$ Accuracy)
Brix Range: 0 to 100% with high-resolution digital LCD
Built-in RS232/USB interfaces for direct LIMS & printer integration

Inquire Abbe Refractometers →

$Pocket Digital Brix Refractometer$

2. Handheld Digital Brix Refractometers

Compact IP65 waterproof portable refractometers designed for rapid on-site testing of fruit juice, honey, beverages, cutting fluids, and sugar solutions.

Automatic Temperature Compensation (ATC) from 10°C to 40°C
Seamless integration with our Physical Property Testing Equipment
Instant 3-second measurement with stainless steel sample well

Get Handheld Brix Specs →

3. Visual Optical & Specialized Refractometers

Rugged analog optical refractometers and specialized models tailored for salinity, clinical urine specific gravity, ethylene glycol antifreeze, and gemological testing.

No power required — pure optical prism measurement
Complements our Water Quality Testing Equipment
Heavy-duty rubber armor casing with easy focal adjustment

Request Optical Tester Rates →

Critical Industrial Applications & Engineering Strengths

Where Refractometers Are Deployed

Refractometers and refractive index measurement instruments are fundamental optical tools utilized across food processing, pharmaceutical, chemical, and industrial QA/QC. Key sectors include:

Food, Sugar & Beverage Processing: Monitoring Brix levels in soft drinks, wine, jams, honey, dairy, and fruit processing lines
Pharmaceutical & Chemical QA: Concentration testing and chemical purity verification of active pharmaceutical ingredients (APIs) and solvent mixtures
Petrochemical & Lubricant Testing: Mineral oil refractive index determination, coolants, and industrial cutting fluid monitoring
Environmental & Water Analysis: Salinity measurement and chemical runoff concentration testing alongside Water Quality Testing Equipment

Qiwei Manufacturing & OEM Advantages

Supporting global laboratory equipment suppliers, scientific dealers, and brand owners:

High-Durability Sapphire Prisms: Scratch-resistant sapphire optical prisms ensure long-term measuring accuracy and chemical resistance
Automatic Temperature Compensation (ATC): Eliminates thermal drift error by normalizing readings to 20°C standard reference temperature
OEM & ODM Customization: Custom casing colors, private-label branding, customized voltage/plug (110V/220V), and tailored measurement scales
Internal Links: Combine with our Whiteness Meters, General Laboratory Equipment, and Electrochemical Instruments for complete laboratory setups.

Frequently Asked Questions (Refractometer Sourcing Guide)

Q1: Why is Automatic Temperature Compensation (ATC) essential in refractometers?

The refractive index of liquids changes significantly with ambient temperature changes. ATC automatically corrects measurement values to the standard temperature reference of 20°C, ensuring accurate and consistent readings without manual calculation tables.

Q2: How do I calibrate a digital handheld Brix refractometer?

Calibration is extremely simple: clean the optical sapphire prism, apply 2-3 drops of pure distilled water, press the "CAL" or "Zero" button, and the instrument automatically sets the 0.0% Brix baseline in seconds.

Q3: Do you support OEM custom branding and wholesale distributor pricing?

Yes, as a factory-direct manufacturer, we offer complete OEM/ODM custom branding, customized UI panels, private label packaging, and tiered volume discounts for global laboratory equipment distributors.

Require Factory Direct Pricing or Custom Laboratory Refractometers?

Get in touch with Hangzhou Qiwei Instrument today for technical consultation, prism options, and competitive distributor pricing within 24 hours.

Inquire Now & Get Quote Talk to Optical Engineer

Hangzhou Qiwei Instrument Co., Ltd. is one of the most reliable manufacturers and suppliers of refractometer in China, featured by quality products and good service. Please rest assured to buy bulk durable refractometer in stock here from our factory. We also accept customized orders.

Digital Sugar Refractometer, Fruit Sweetness Tester, Soybean Milk Brix Refractometer