Best Lab Viscometers of 2025

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Lab viscometers are essential tools for analyzing the viscosity of fluids in laboratory settings. These instruments provide accurate measurements of the resistance of a fluid to flow under specific conditions. They come in various types, including rotational, capillary, and oscillatory viscometers. These devices are widely used in industries such as pharmaceuticals, food and beverage, and oil and gas. Lab viscometers are crucial in ensuring the quality and consistency of products, as well as in research and development of new materials. They are easy to operate and provide reliable results, making them a must-have for any laboratory.
At a Glance: Our Top Picks
Top 10 Lab Viscometers
U.S. Solid Rotary Viscometer
The U.S. Solid Viscometer is designed for precise fluidity testing, making your measurements quick and reliable. With microcomputer technology, it displays viscosity and rotor speed clearly, ensuring your production meets necessary standards. The device features four interchangeable rotors, which allow you to measure a broad range of viscosities, and an optional rotor for even lower measurements. Its easy-to-read LCD screen provides real-time data, simplifying the process of monitoring liquid viscosity. This versatility makes it suitable for various industries, from food and beverage to pharmaceuticals, ensuring quality in every application.
CGOLDENWALL NDJ-5S Rotary Viscometer
The CGOLDENWALL Rotary Viscometer is a high-precision lab instrument designed to measure viscosity. With a measurement range of 1mPa.S-100,000mPa.S and an accuracy of ±3%, it allows you to determine viscosity as low as 1mPa.s. This viscometer features five rotors and four speeds, offering 20 combinations to suit different viscosity tests. The microcomputer control technology ensures reliable and easy operation, with an automatic search function to quickly find the right rotor and speed. The LCD digital display provides clear results, showing the number of rotors, speed, viscosity, percentage, and temperature simultaneously. Suitable for measuring both Newtonian and Non-Newtonian liquids, this viscometer can be widely used in various industries such as oil, paint, plastics, detergents, and more.
Bonvoisin NDJ-8T Digital Viscometer
The Bonvoisin Digital Viscometer is designed for precise viscosity testing of various fluids, including adhesives, paints, and cosmetics. With an impressive measurement range from 10 to 2,000,000 mPa.s and an accuracy of ±1%, this device allows you to analyze both non-Newtonian and Newtonian fluids effectively. The user-friendly touch screen displays essential readings such as spindle speed and temperature, making it easy for you to monitor your tests. Additionally, the viscometer can store up to 20 records, ensuring you can keep track of your data without hassle.
Digital Rotary Viscometer with Temp. Probe
The Digital Rotary Viscometer with Temp. Probe is a lab viscometer with data output, LED screen display, precise measurement, and ingenious design. The viscometer is equipped with RS232 interface and temp. probe, LED screen display that clearly displays rotor, speed, viscosity, and temperature in real time, precise measurement range from 10-6,000,000Mpa.s, and an ingenious design with 4 rotors and premium lifting system. This viscometer is mainly used to measure the absolute viscosity of the Newtonian liquids and the apparent viscosity of the Non-Newtonian liquid, making it ideal for use in a wide range of applications such as inks, paints, coatings, adhesives, greases, juices, dairy products, cosmetics, pharmaceuticals, biological fluids, rubber, mud, pulp, etc.
Bonvoisin Digital Rotary Viscometer
The Bonvoisin Digital Rotary Viscometer is a lab rotational viscosity meter with 4 rotors and temperature probe, suitable for testing the viscosity of various fluids. It has ±3% accuracy and an LCD display that shows rotor, speed, mPas (1mPas = 1cP), and temperature. The viscometer has 4 rotors and 4 speed options, making it easy to choose the correct settings for testing liquids. It also has a sliding design that allows it to adjust to solution containers of different heights.
CGOLDENWALL NDJ-5S Rotary Viscometer
The CGOLDENWALL NDJ-5S Rotary Viscometer is a high-precision lab viscometer that can measure the absolute viscosity of Newtonian liquids and the apparent viscosity of Non-Newtonian liquids. Its high measuring accuracy, microcomputer control technology, LCD digital display, and reliable and easy-to-use operation make it a versatile tool for measuring viscosity in a wide range of materials, including oil, paint, plastics, detergents, drugs, and more. The device comes with 5 rotors, 4 speeds, and 20 rotor-speed combinations, and can measure viscosity as low as 1mPa.s with 0# rotor.
BAOSHISHAN NDJ-1 Rotary Viscometer
The BAOSHISHAN Viscometer offers precise viscosity measurements with an accuracy of ±5%. It features interchangeable rotors and adjustable rotation speeds, allowing you to test various liquids effectively. This flexibility helps you uncover the viscosity of unknown substances, enhancing your experimental control. Weighing in as a lightweight instrument, it is easy to maneuver while ensuring stable operation thanks to its helical gear lifting system. With a wide application range, this viscometer is suitable for testing liquids like grease, paint, and adhesives, making it a versatile tool in any lab setting.
AKaSping Digital Rotary Viscometer
The AKaSping Viscosity Meter is designed to deliver precise viscosity measurements for various liquids. With its microcomputer control and a robust 10W constant speed motor, you can expect uniform mixing and stable results. The durable metal construction ensures longevity, even in harsh conditions like acidic or alkaline environments. Its high-definition LCD display allows you to easily read essential data, such as KU, CP, and G values, making your lab work more efficient. This viscometer is ideal for testing paints, coatings, and adhesives, helping you achieve accurate results for your projects.
GOYOJO NDJ-8S Digital Viscometer
The GOYOJO Viscosity Tester is designed to accurately measure the viscosity of Newtonian liquids. It operates within a range of 1 to 2,000,000 mPa.s, making it suitable for a variety of applications, including paints, adhesives, and cosmetics. With its built-in temperature sensor, you can ensure precise measurements under varying conditions. The device is user-friendly and intuitive, allowing you to quickly assess the viscosity of different fluids. Plus, the included RS232 to USB cable enables easy data transfer to a computer for further analysis.
Bonvoisin Digital Rotary Viscometer
The Bonvoisin Viscometer is an essential tool for measuring the viscosity of both non-Newtonian and Newtonian fluids. With its clear LCD display, you can easily monitor spindle speed, temperature, and viscosity readings, making it user-friendly. The device comes with four rotors and eight adjustable speeds, allowing you to select the most suitable settings for your specific liquid sample. Additionally, its sliding design enables you to adapt the viscometer to various container heights, enhancing convenience during testing. Lastly, you can connect it to a PC for extensive data storage, ensuring that your measurements are easily accessible for analysis.
Frequently Asked Questions (FAQs)
1. What are the 4 types of viscometers?
There are four types of viscometers commonly used in laboratories: capillary tube viscometers, falling ball viscometers, rotational viscometers, and vibration viscometers. Each type of viscometer utilizes a different measuring method to determine the viscosity of fluids.
2. What is a viscometer used for in a laboratory?
Viscometers are laboratory instruments used to measure the viscosity of liquids. The viscosity of a liquid affects its performance in various applications, such as pumping, piping, dipping, and coating. Measuring viscosity is important for a wide range of materials, including oils and other fluids.
3. What are two examples of viscometer?
Two examples of viscometers commonly used in laboratories are U-tube viscometers and Ostwald viscometers. These viscometers are often used to measure the viscosity of Newtonian fluids, including dilute solutions and suspensions. They are simple and relatively inexpensive viscometric systems.
4. What are the 2 methods for measuring viscosity?
There are five methods commonly used for measuring viscosity: the capillary viscometer, the flow cup, the rotational viscometer, the rolling ball viscometer, and the drawing ball viscometer. Each method has its own principles and applications for determining the viscosity of fluids.
5. How can you determine viscosity in a laboratory?
One method to determine viscosity in a laboratory is by using capillary viscometers. This method involves passing a sample of known density and volume through a vertical U-tube with a small diameter. By measuring the time it takes for the fluid to flow through the tube, the kinematic viscosity can be determined.
6. Which viscometer is used in the laboratory for the determination of viscosity?
Ostwald viscometers are commonly used in laboratories for the determination of viscosity. These viscometers are designed to measure the viscosity of a fluid with a known density. They provide a reliable method for determining the viscosity of liquids in laboratory settings.
During our lab viscometer research, we found 24 lab viscometer products and shortlisted 10 quality products. We collected and analyzed 2,429 customer reviews through our big data system to write the lab viscometers list. We found that most customers choose lab viscometers with an average price of $451.07.
The lab viscometers are available for purchase. We have researched hundreds of brands and picked the top brands of lab viscometers, including U.S. Solid, CGOLDENWALL, Bonvoisin, Saladulce, BAOSHISHAN. The seller of top 1 product has received honest feedback from 358 consumers with an average rating of 4.8.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.