STD-702 Bulk Density & Tap Density Tester Technical Guide

1. What This Machine Does

- Measures how tightly powders pack together

- Tests both loose powder (bulk density) and compacted powder (tap density)

- Used for quality control in medicine making, chemical production, and material research

2. Simple Explanation

Bulk Density Test:

- Shows how powder sits naturally in a container

- Like measuring flour when you scoop it from the bag

Tap Density Test:

- Shows maximum packing after vibration

- Like tapping a flour container to settle the contents

3. Key Features

- Digital screen shows results automatically

- Mechanical tapper works like a precise hammer

- Special glass tube for accurate measurements

- Can test many powder types

4. Technical Details

- Tapping speed: About 250 taps per minute

- Tapping height: 3mm lift each time

- Test tube sizes: 25mL or 100mL options

- Power needs: Standard wall outlet (220V)

5. Why It's Important

- Helps make better medicines that flow correctly

- Ensures consistent powder quality

- Meets strict pharmaceutical rules (USP/EP/JP standards)

6. How To Use It

Simple Steps:

1) Pour powder into the tube

2) Weigh it

3) Read the loose powder level (bulk density)

4) Start the tapper

5) Read the settled powder level (tap density)

6) The machine calculates everything automatically

7. Understanding Results

- Good flowing powder: Little change between bulk and tap tests

- Poor flowing powder: Big difference after tapping

- Numbers help predict how powder will behave in machines

8. Where It's Used

- Medicine factories

- Powder coating companies

- Food powder producers

- Battery material makers

9. Care Instructions

- Keep the glass tube clean

- Check the tapper monthly

- Do yearly full checkups

- Always keep dry

10. Safety First

- Stops automatically if problems occur

- Protective cover prevents accidents

- Stable base prevents tipping

11. Why It's Better Than Old Methods

- No manual tapping (more consistent)

- Automatic calculations (no math errors)

- Saves time (tests take minutes)

- More accurate than hand methods

12. Extra Options Available

- Bigger test tubes for large samples

- Computer connection for saving data

- Special tubes for sticky powders

What the Numbers Mean:

- Bulk Density = Weight ÷ Loose Volume

- Tap Density = Weight ÷ Packed Volume

- Hausner Ratio = Tap Density ÷ Bulk Density

- Higher ratio means poorer flow