Overview
AS-100 Tap Density Tester / Meter is used to measure the tapped density or packed density of powders, as well as granulated or flaked materials by standardized and repeatable procedures according to international standards in pharmaceutical applications:
- USP Chapter 616 Bulk Density & Tapped Density of Powders TAPPED DENSITY Method I & II
- European Pharmacopoeia EP Chapter 2.9.15 Apparent Volume
and applicaitons in metal powders in powder metallurgy (P/M):
-ISO 3953:1993 Metallic Powders-Determination of Tap Density
- ASTM B 527 Standard Test Method for Determination of Tap Density of Metallic Powders and Compounds

Principle
Definition of tapped density is an increased bulk density attained after mechanically tapping a container containing the powder sample. Tapped density is obtained by mechanically tapping a graduated measuring cylinder or vessel containing a powder sample. After observing the initial powder volume or weight, the apparatus measuring cylinder or vessel is mechanically tapped, and volume or weight readings are taken until little further volume or weight change is observed. The mechanical tapping is achieved by raising the cylinder or vessel and allowing it to drop under its own weight a specified distance by either of three methods as during tapping may be preferred to minimize any possible separation of the mass during tapping down. This parameter is very important in packing the material. During tapping of the sample, the smaller particles try to fit themselves in gaps of the larger particles and hence the total volume of the powder reduces.

Specifications
Test Report Output:Integrated Micro Printer
Operation: LED and membrane pannel
Speed(Variable): USP Method I 300 ± 1 tap/min; USP Method II and ASTM 250 ± 1 tap/min
Drop Height(Variable) : USP Method I 14 ± 2 mm; USP Method II and ASTM 3 ± 0.3 mm
Platform rotation: USP Method I 5-15 rotations/min; USP Method II and ASTM N/A
Accuracy:< 1 tap of 10000 taps
Input power: AC 220V 50Hz/110V 60Hz (optional)
Dimensions:35.8 cm W x 51.6 cm H* x 29.7 cm D (* height with 100mL cylinder)
Weight: 13.8 kg net; 20 kg gross
Recommended size of accoustic cabinet: 60 cm W x 80 cm H x 40 cm D (Internal size)

Features
-Flexible parameter adjustment
The AS-100 Tap Density Tester changes easily the key parameter such as tapping speed and drop height in order to meet various international standards.
-Fast and easy operation
The LED and mebrane control pannel brings operator a easy and fast operation. Accurate to 4 decimals. Automatically saving all the test information.
-Reduced noise
AS-100 is available with an optional accoustic cabinet in order to reduce the noise level, while operator can monitor the operation through the front transparent plexiglass door. AimSizer gives optimum internal size in order to reduce the shipping cost as well.
-Easily outputing hard copy
The integrated micro computer prints the test data including Sample No, Weight, Volume, Tap Number, Tap Density and Operator by simply pressing the button on membrane.
-Easy to clean
The outter surface is plastic coated, it is strong and resistant to any powders non-corrosive or corrosive. It makes for the cleaning procedure as well as a longer working life.

Applications
Density measurement of Pharmaceuticals, Minerals, Pigment, Metal Powders, Catalysts, Coffee, Tea, Compounds and other powders suitable to be tested according to above mentioned international standards.

Manufacturer
AimSizer is a world leading supplier of Tap Density Tester, selected materials and standardized compoments contribute to a satsifactory Tap Density Tester. Over years AimSizer has supplied to hundreds of satisfactory users worldwide on cost-effective basis.

Frequently Asked Questions
8. What are relation between USP 616 Bulk Density and Tapped Density of Powders and European Pharmacopoeia and Japanese Pharmacopoeia?
-USP 616 Bulk Density and Tapped Density of Powders has been harmonized with the corresponding texts of the European Pharmacopoeia and /or the Japanese Pharmacopoeia. The portion that is not harmonized is marked with symbols to specifiy this face.

7. What is the name of USP 616?
-USP 616 is Bulk Density and Tapped Density of Powders

6. What is test method 2 of international standard USP 616 Bulk Density and Tapped Density of Powders using a tap density tester?
-The method 2 is approximately same as method 1, operator proceeds as directed under Method I except that the mechanical tester provides a fixed drop of 3+-0.2 at a norminal rate of 250 taps per minute.

5. How to do if it is not possible to use a 100 g test sample during tap density testing using a tap density tester according to USP 616 Bulk Density and Tapped Density of Powders?
-Generally,replicate determination are desireable for the determination of this property. Specify the drop height with the results.If it is not possible to use a 100 g test sample, use a reduced amount and a suitable 100ml graduated cylinder (readable to 1ml) weighing 130+-16g and mounted on a holder weighing 240+-12g. The modified test conditions are specified in the expression of the results.

4. What is the test procedure in USP 616 Bullk Density and Tapped Density of Powders method 1 using a tap density tester?
-Proceed as described in USP 616 for the determination of the bulk volume.Secure the cylinder in the holder. Carry out 10,500, and 1250 taps on the same powder sample and read the corresponding volumes V10,V500 and V1250 to the nearest graduated unit. If the difference between V500 and V1250 is less than or equal to 2ml,V1250 is the tapped volume.If the difference between V500 and V1250 exceeds 2ml,repeat in increments such as 1250 taps,until the difference between succeeding measurements is less than or equal to 2ml.Fewer taps may be appropriate for some powders, when validated. Calculate the tapped density using the relevant formula in USP 616 to calculate the final tapped volume and therefore calculate the final tapped density.

3. What are major apparatus in usp chapter method 1 Bulk Density and Tapped Density of Powders using a tap density tester?
-The major apparatus consists of the following:1.a 250ml graduated cylinder (readable to 2ml with a mass of 220+-44g 2.a settling apparatus capable of production, in 1 min, either nominally 250+- 15 taps from a height of 3+-0.2mm, or nominally 300+-15 taps from a height of 14+-2mm.The support for the graduated cylinder,with its holder, has a mass of 450 +- 10g.

2. How to measure the tapped density according to usp chapter 616 bulk density and tapped density of powders using a tap density tester?
-The tapped density is an increased bulk density attained after mechanically tapping a container containing the powder sample.Tapped density is obtained by mechanically tapping a graduated measuring cylinder or vessel containing a powder sample.After observing the initial powder volume or weight, the measuring cylinder or vessel is mechanically tapped,and volume or weight readings are served. The mechanical tapping is achieved by raising the cylinder or vessel and allowing it to drop under its own weight a specified distance by either of three methods as described in usp chapter 616.Devices that rotate the cylinder or vessel during tapping may be preferred to mimimize any possible separation of the mass during tapping down.

1. What are major international standards about determining tapped density of powders using a tap density tester/meter?
-There are following internatioal stanrads describing tap density measurement:international standards in pharmaceutical applications:
- USP Chapter 616 Bulk Density & Tapped Density of Powders TAPPED DENSITY Method I & II
- European Pharmacopoeia EP Chapter 2.9.15 Apparent Volume
and applicaitons in metal powders in powder metallurgy (P/M):
-ISO 3953:1993 Metallic Powders-Determination of Tap Density
- ASTM B 527 Standard Test Method for Determination of Tap Density of Metallic Powders and Compounds

Demo Videos

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