Best Lab Viscometers of 2025

Brian Howie Avatar
Brian Howie
Last Updated: Jan 5, 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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

U.S. Solid Rotary Viscometer Cover #TOP 1
U.S. Solid Rotary Viscometer
ftb score rating icon 9.8
CGOLDENWALL NDJ-5S Rotary Viscometer Cover #TOP 2
CGOLDENWALL NDJ-5S Rotary Viscometer
ftb score rating icon 9.7
Bonvoisin NDJ-8T Digital Viscometer Cover #TOP 3
Bonvoisin NDJ-8T Digital Viscometer
ftb score rating icon 9.5

Top 10 Lab Viscometers

#TOP 1

U.S. Solid Rotary Viscometer

USS-DVT
10^5 mPa·s
Without RS232
U.S. Solid Rotary Viscometer Cover
U.S. Solid Rotary Viscometer, Viscosity Meter 10-100,000 mPa with 4 Rotors, ±2% Accuracy, LCD Display, 100-240V, for Laboratory/Industrial Use

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.

What We Like
Accurate viscosity measurements
Multiple rotor options
Real-time LCD display
Versatile industry applications
#TOP 2

CGOLDENWALL NDJ-5S Rotary Viscometer

CNA-232B
CGOLDENWALL NDJ-5S Rotary Viscometer Cover
CGOLDENWALL NDJ-5S Rotary Visometer Digital Rotational Viscosity Meter Lab Viscometers 110-240V 10-100,000mPa.s Accuracy:±3.0% (Old or New Panel)

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.

What We Like
High Measuring Accuracy
Microcomputer Control Technology
LCD Digital Display
#TOP 3

Bonvoisin NDJ-8T Digital Viscometer

NDJ-8T
Bonvoisin NDJ-8T Digital Viscometer Cover
Bonvoisin Digital Rotary Viscometer 10-2,000,000mPa.S Touch Screen Viscosity Meter with 4 Rotors and Temperature Probe ±1% Accuracy 100-240V (NDJ-8T)…

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.

What We Like
High accuracy measurement
Touch screen for easy use
Data storage capability
Versatile for various fluids
#TOP 4

Digital Rotary Viscometer with Temp. Probe

Dina-030
Digital Rotary Viscometer with Temp. Probe Cover
Saladulce Digital Rotary Viscometer with Temp. Probe, Lab Viscometer with Data Output, 10-6, 000,000 mPa.s Viscosity Meter Tester ±3% 100-240V

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.

What We Like
Data output available
LED screen display with auto search function
Precise measurement with a range of 10-6,000,000Mpa.s and accuracy of ±3%
Ingenious design with 4 rotors and premium lifting system
Wide range of applications in various fields
#TOP 5

Bonvoisin Digital Rotary Viscometer

XXX-106
NDJ-5S
Bonvoisin Digital Rotary Viscometer Cover
Bonvoisin Digital Rotary Viscometer 10-100,000mPa.S Digital Lab Rotational Viscosity Meter +-3% Accuracy Fluidimeter Tester Meter with 4 Rotors and Temperature Probe 110-240V(NDJ-5S)

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.

What We Like
Compatible with various fluids, including solvent based adhesive, oil paint, coating, cosmetic, printing ink, and pulp
±3% accuracy and reliable results
LCD display for rotor, speed, mPas, and temperature
4 rotors and 4 speed options for easy customization
Sliding design for adjusting to solution containers of different heights
#TOP 6

CGOLDENWALL NDJ-5S Rotary Viscometer

CNA-1095
With 0# Rotor
CGOLDENWALL NDJ-5S Rotary Viscometer Cover
CGOLDENWALL NDJ-5S Rotary Visometer Digital Rotational Viscosity Meter Lab Viscometers RS232 interface 110-240V 1-100,000mPa.s Accuracy:±3.0% (With 0# rotor)

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.

What We Like
High measuring accuracy of ±3% with 5 rotors and 4 speeds
Microcomputer control technology and customizable data storage
LCD digital display with high-brightness blue backlight
#TOP 7

BAOSHISHAN NDJ-1 Rotary Viscometer

M-51
NDJ-1
BAOSHISHAN NDJ-1 Rotary Viscometer Cover
BAOSHISHAN Rotary Viscometer Viscosity Tester 10-100,000mPa·s Fluidimeter Meter Newton Liquid Viscometer (NDJ-1)

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.

What We Like
Wide viscosity measurement range
Interchangeable rotors for flexibility
Lightweight and easy to operate
Suitable for various liquids
#TOP 8

AKaSping Digital Rotary Viscometer

AKaSping
BI-1691-LXMLUXG
AKaSping Digital Rotary Viscometer Cover
Digital Rotary Viscometer 10W 220V Lab Rotational Viscosity Meter Fluidimeter Tester Meter KU/CP/G Value Display for Laboratory Paints Coating

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.

What We Like
Stable and accurate measurements
Durable metal construction
High-definition LCD display
Microcomputer control for ease
#TOP 9

GOYOJO NDJ-8S Digital Viscometer

GOYOJO
NDJ-8S-AA1891
GOYOJO NDJ-8S Digital Viscometer Cover
GOYOJO Digital Rotary Viscometer with 4 rotors, Lab Viscosity Fluidimeter 1~2000000mPa with LCD and Data Output, 0.3~60 rev/min, for Inks, Paints, coatings, adhesives, greases, Cosmetics NDJ-8S

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.

What We Like
Wide viscosity range
Built-in temperature sensor
User-friendly interface
Data output capability
#TOP 10

Bonvoisin Digital Rotary Viscometer

Roy-106
Bonvoisin Digital Rotary Viscometer Cover
Bonvoisin Digital Rotary Viscometer 10-2,000,000mPa.S Digital Lab Rotational Viscosity Meter with 4 Rotors and Temperature Probe 110-240V(NDJ-8S)

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.

What We Like
Multiple viscosity testing options
Clear LCD display
Adjustable rotor and speed
Sliding design for convenience
PC connectivity for data storage
Buying Guide Image

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.

Editor's Notes

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.

Written by
Brian Howie Avatar

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.