NDJ viscosity and Brookfield viscosity are two common viscosity measurement methods. Viscosity is a measure of a liquid’s resistance to flow and is used to describe how thick a liquid is.
In industrial production and scientific research, viscosity is an important parameter, which has an important influence on the rheological properties and processing performance of liquids. This article will introduce the measurement principles and applications of NDJ viscosity and Brookfield viscosity respectively.

1. NDJ viscosity

The NDJ Viscosity is a rotational viscometer commonly used to measure the dynamic viscosity of liquids. The measurement principle is to use the resistance generated when the liquid flows and measure the torque on the liquid to calculate the viscosity value.
NDJ viscometer has the advantages of simplicity, speed and accuracy, and is widely used in various fields.
The working principle of the NDJ viscometer is to inject the liquid to be measured into the measurement chamber of the viscometer. It then penetrates the liquid by rotating it. The viscosity of the liquid will cause a certain amount of resistance to the rotating spines. A viscometer calculates the viscosity of a liquid by measuring the torque of a rotating spike. The measurement results of the NDJ viscometer are usually expressed in the unit of dynamic viscosity mPa·s.
NDJ viscometer has a wide range of applications. For example, in the coating industry, the viscosity of coatings can be measured with an NDJ viscometer. To ensure the construction performance and quality of the coating.
in the food industry. The NDJ viscometer can be used to measure the viscosity of liquid foods such as jam and soy sauce. To ensure the taste and quality of the product. In addition, NDJ viscometer is also widely used in pharmaceutical, chemical, textile and other industries.

2. Brookfield viscosity

Brookfield viscosity is a static viscosity measurement method commonly used to measure the viscosity of liquids. The measurement principle is to calculate the viscosity value by using the pressure difference generated when the fluid passes through a pipe with a fixed hole diameter.
Brookfield viscometer is simple, intuitive and convenient, and is widely used in measuring liquid viscosity.
The working principle of the Brookfield viscometer is to inject the liquid to be measured into the measuring cup of the Brookfield viscometer. The liquid is then piped through an orifice plate of fixed pore size.
The viscosity of the liquid will affect the pressure difference generated when the liquid flows through the orifice plate. A Brookfield viscometer measures this pressure difference to calculate the viscosity of a liquid. Brookfield viscosity measurements are usually expressed in cP, the unit of absolute viscosity.

Brookfield viscometer has a wide range of applications. For example, in the petroleum industry, the viscosity of petroleum products can be measured with a Brookfield viscometer. To evaluate its flowability and processing properties.
In the coatings industry, the viscosity of coatings can be measured with a Brookfield viscometer. To ensure the construction performance and quality of the coating. In addition, Brookfield viscometer can also be used to measure liquid content in food, chemical industry, medicine and other fields.

Summarize

NDJ viscosity and Brookfield viscosity are commonly used viscosity measurement methods. They have a wide range of applications in different fields.
NDJ viscosity is mainly used to measure the dynamic viscosity of liquids, and the measurement results are usually in mPas.
Brookfield viscosity is mainly used to measure the static viscosity of liquids, and the measurement results are usually in cP.
Whether it is NDJ viscosity or Brookfield viscosity, they play an important role in industrial production and scientific research. It can help people better understand the rheological properties and processing performance of liquids. Improve production efficiency and product quality.