Manual Powder Flow Tester – Bulk Density

Are you struggling to accurately measure the interaction of your powder particles with their environment? A Manual Powder Flow Tester could be just what you need. This blog will guide you on how to adeptly use this user-friendly, cost-efficient instrument for assessing mass-flow hopper half angles and gravity flow chute angles.

Let’s delve in and discover more about obtaining precise bulk density measurements!

What is a Powder Flow Tester?

A Powder Flow Tester is a device used to measure the flow properties of powders, specifically their bulk density. It is designed to provide accurate and reliable data on how easily a powder flows under different conditions.

By understanding these flow properties, manufacturers can optimize processes and ensure consistent product quality.

How to Use the RPF-1 Powder Flow Tester

Using the RPF-1 Powder Flow Tester is simple and straightforward. First, you need to put the powder into the funnel from the top. Then, lightly tap the funnel to ensure that the powder is presented without compacting itself.

After loading, wait for approximately 30 seconds before proceeding. Next, release the lever to allow entry and observe if the powder runs freely. For unknown powders, start with a disc of 15 mm and repeat the process with smaller discs until a negative result is obtained.

The flowability of the powder can be determined based on whether it falls freely or flows through the hole in the disc.

Angle of Repose Table

The angle of repose table is a useful tool for understanding the flowability of different powders. It provides information on the angles at which various powders can rest without sliding or flowing.

By knowing the angle of repose for a specific powder, one can assess its flow ability and determine how easily it will flow through a hole in the disc. This table serves as a reference guide, allowing users to compare and evaluate different powders based on their angles of repose.

It helps in choosing the right powder for specific applications and optimizing processes that involve powder handling.

Flow property Angle of Repose 
Excellent 25-30
Good 31-35
Fair 36-40
Passable  41-45
poor 46-55
Very poor 56-65
Very very Poor >66

                    Angle Of Repose =tan-1(Height of cone Formed/Radius of disk)

Key Features of the Raise RPF-1 Powder Flow Tester

The RPF-1 Powder Flow Tester offers several advantages. Firstly, it is incredibly easy to use, making it accessible for users of all experience levels. Additionally, the tester is made from complete stainless steel, ensuring that it is non-reactive to powders and providing accurate results.

Lastly, the RPF-1 Powder Flow Tester is cost-efficient, offering a reliable solution for testing bulk density without breaking the bank. Read on to learn more about how this manual tester can benefit your powder testing needs!

Easy To Use

The Raise RPF-1 Powder Flow Tester is a tool that anyone can use. It has interchangeable discs for testing different powders. You don’t have to be an expert to use it, which helps cut down costs and speeds up work like mixing and making tablets! 

Complete Stainless Steel ( non reactive to powders)

The Manual Powder Flow Tester – Bulk Density is made of complete stainless steel, which is a material that does not react with powders. This makes it an ideal choice for testing the flow of different types of powders.

The stainless steel construction offers several advantages, including durability and resistance to corrosion. Additionally, it is easy to clean, ensuring accurate and reliable results every time you use the tester.

Cost Efficient

The Manual Powder Flow Tester – Bulk Density is a cost-efficient tool for evaluating powder flow properties. It provides manufacturers with an affordable solution to assess the flow ability of their powders, helping them identify potential issues and optimize their production processes.

By using this tester, companies can avoid costly problems such as clogging or uneven flow, leading to increased productivity and reduced downtime. The cost efficiency of this tester makes it a valuable investment for any manufacturer looking to improve powder handling and ensure consistent and reliable operations.

Accurate results

The RPF-1 Powder Flow Tester gives true results. It measures the right flow features of powders and grains. This tester finds problems like sticking, bridging, and uneven flow in time.

Thus, it makes sure that powder flows as expected all the time. A digital height gauge with a platform comes with this tester too. This tool helps get correct measurements for study.


In conclusion, the manual powder flow tester is a valuable tool for assessing the bulk density and flowability of powders. With its easy-to-use design and intuitive software, it provides quick and reliable results.

Its stainless steel construction ensures compatibility with a wide range of powders, making it a cost-effective choice for testing purposes. By using this instrument before setting up equipment, manufacturers can ensure optimal flowability and improve efficiency in their production processes.


1. What is a manual powder flow tester?

A manual powder flow tester is a device used to measure the bulk density of powdered materials.

2. How does a manual powder flow tester work?

To use a manual powder flow tester, you simply fill the container with your powdered material, level it off, and weigh it. The weight divided by the volume gives you the bulk density.

3. Why is measuring bulk density important?

Measuring bulk density is important because it helps determine how well powders will flow and pack together in various processes such as manufacturing, transportation, and storage.

4. Can I use a manual powder flow tester for all types of powders?

Yes, a manual powder flow tester can be used for most types of powders including food products, pharmaceuticals, chemicals, and more.

5. Are there any safety precautions when using a manual powder flow tester?

When using a manual powder flow tester, it’s important to follow proper safety precautions such as wearing protective gloves and goggles to prevent contact with potentially harmful substances or particles that may be present in the powdered material being tested.

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