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Overview
AS-200 Scott Volumeter / Apparent Density Tester determines scott / bulk /apparent density of metallic powders according to International Standard ISO 3923 - 2 Metallic powders - Determination of apparent density - Part 2: Scott volumeter method. It completely meets USP Chapter 616 Bulk Density and Tapped Density of Powders Method II-Measurement in a Volumeter and ASTM B 329 Standard Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter. It is applicable to powders including metal powders, compounds, paint, pigment, refractory metals etc. that will not flow freely through a 5 mm orifice (see ISO 3923-1 or see AS-300).

Principle
Measurement of the mass of a certain quantity of powder which in a loose condition exactly fills a cup of known volume. The loose condition is obtained by using an apparent density tester, when filling the cup, by cascading the powder over a series of inclined plates in a Scott volumeter/Apparent Density Tester. The ratio between the mass and the volume represents the apparent density. This is the definition of the apparent density obtained by apparent density tester.

Apparatus
● Stand and horizontal vibration-free base
● Cylindrical/Density Cup
● Bottom Funnel
● (Top) Funnels
● Baffle box
● Balance
● Spatula
● Brush
(Above apparatus are subject to quotation)

Applications
It is applicable to powders including metal powders, compounds, paint, pigment, refractory metals etc. that will not flow freely through a 5 mm orifice (see ISO 3923-1)

Manufacturer
Aimsizer Scientifc is a world leading and reliable manufacturer of Scott Volumeters. All the metallic parts are processed and supplied by qualified subcontractor according to International Standards in order to make the unit accurate and robust to satisfy the user's requirement at cost-effective basis.

Frequently Asked Questions
19. How to do in case of a non-free-flowing powder during powder filling using a scott volumeter according to international standard ISO 3923-2 metallic powders-Determination of apparent density-Part 2 scott volumeter method?
-If the powder is not free flowing,its passage through the sieve may be aided by light brushing with a soft brush.

18. How to fill the density cup of a scott volumeter according to international standard ISO 3923-2 metallic powders-Determination of apparent density-Part 2 scott volumeter method?
-Pour or feed the powder carefully by means of a spatula into the funnel until the cup is completely filled and powder flows over.

17. What are requirements on the samples when using a scott volumeter according to ISO 3923-2 metallic powders-Determination of apparent density-Part 2 scott volumeter method?
-In general the powder should be tested in the as-received condition. In certain instances the powder may be dried.However,if the powder is susceptible to oxidation,the drying shall take place in vacuum or in inert gas.If the powder contains volatile substances it shall not be dried.

16. What is the requirement during sampling by using a scott volumeter/apparent density tester according to ISO 3923-2 metallic powders-Determination of apparent density-Part 2 scott volumeter method?
-The test sample shall be of at least 100 cm3 volume to allow the determination to be carried out on three test portions

15. What is the function of a balance in a scott volumeter according to ISO 3923-2 Metallic powders-Determination of apparent density - Part 2 Scott Volumeter method?
-The balance used with a scott volumeter should have sufficient capacity, permitting weighing to an accuracy of +- 0.05 g.

14. What is the requirement on the material of cylindrical cup in a scott volumeter in ISO 3923-2 metallic powders-Determination of apparent density-Part 2 scott volumeter method?
-The density cup and funnels should be made of non-magnetic,corrosion resistant metallic material having sufficient wall thickness and hardness to avoid distortion and excessive wear.The inner surfaces of the cup and funnels should be polished.

13. What is the function of a cylindrical cup in a scott volumeter according to ISO 3923-2 Metallic powders-Determination of apparent density - Part 2 Scott Volumeter method?
-The cylindrical cup has a capacity of 25+- 0.05 cm3 and an internal diameter of 30+-1 mm.It is used to hold the powder from the funnel and therefore determine the apparent density of the powder with a defined volume.

12. What is the function of a stand and horizontal vibration-free base in a scott volumeter according to ISO 3923-2 Metallic powders-Determination of apparent density - Part 2 Scott Volumeter method?
-The stand and horizontal vibration free base is used to support the cup, box and funnel coaxially at the heights indicated in the figures.

11. What is the function of glass baffles in ISO 3923-2 Metallic powders Determination of apparent density part 2 Scott volumeter method?
-The baffles are arranged so that the powder falls on to each of them in turn, thereby breaking the fall and reducing the velocity of the stream of powder.

10. What is the specifications of a baffle box in scott volumeter/apparent density tester in ISO 3923-2 Metallic powders Determination of apparent density part 2 Scott volumeter method?
-The baffle box of scott volumeter/apparent density tester should have a square section, and containing four glass baffles which may be located and retained by grooves in opposite sides of the box and may thus be removed for ease of cleaning. The baffles are arranged so that the powder falls on to each of them in turn, thereby breaking the fall and reducing the velocity of the stream of powder. It is important that non of the powder can pass between the upper edge of the glass baffles and the sides of the baffle box. It is also important that the lower edges of the glass baffles are either in line or slightly overlap in a vertical plane.

9. What is the size or dimension of a funnel used in scott volumeter/apparent density tester in ISO 3923-2 Metallic powders Determination of apparent density part 2 Scott volumeter method?
-The funnel should have a large and a small conical section separated by a cylindrical section and incorporating a brass sieve of aperture size 1,18 mm.

8. What are major apparatus in a scott volumeter according to ISO 3923-2 Metallic powders Determination of apparent density part 2 Scott volumeter method?
-There are following apparatus necessary in a scott volumeter in determinating apparent density of powders:funnel,baffle box,stand and horizontal vibration-free base,cylindrical cup,balance.

7. What are principal symbols and designations used in ISO 3923-2 Metallic powders Determination of apparent density part 2 Scott volumeter method?
-1.apparent density of metallic powders 2.apparent density obtained by the Scott volumeter method 3.mass of the powder 4.volume of the cup

6. How to obtain a loose condition in a scott volumeter method determining apparent density?
-The loose condition is obtained, when filling the cup, by cascading the powder over a series of inclined plates in a scott volumeter.

5. What is principle of scott volumeter method in determining apparent density?
-Measurement of the mass of a certain quantity of powder which in a loose condition exactly fills a cup of known volume.The ratio between the mass and the volume represents the apparent density.

4. What are related international standards of ISO 3923-2 Metallic powders - Determination of apparent density - Part 2: Scott volumeter method?
-There are two related international standards of ISO 3923-2: one is ISO 3923-1 Metallic powders - Determination of apparent density - Part 1: Funnel method.The other is ISO 3923-3, Metallic powders - Determination of apparent density - Part 3: Oscillating funnel method.

3. What is ISO 3923 part 3?
-Part 3 of this international standard ISO 3923 specifies the oscillating funnel method for the determination of apparent density of such powders, and this is preferred since it gives better precision,but it cannot be used in cases where the powder may change its properties due to the vibration action applied to the powder during testing.

2. What is the application of a Scott Volumeter designated in ISO 3923-2?
-ISO 3923 specifies the Scott volumeter method for the determination of the apparent density of metallic powders.It is applicable to powders that will not flow freely through a 5mm orifice(see ISO 3923-1).

1. What international standards describe the determination of apparent density?
-So far there are three major international standards describing the determination of apparent density.One is international standard ISO 3923-2 Metallic powders - Determination of apparent density - Part 2: Scott volumeter method. The other is ASTM B 329 Standard Test Method for Apparent Density of Metal Powders and Compounds Using the Scott Volumeter.The third is USP Chapter 616 Method 2 BULK DENSITY AND TAPPED DENSITY OF POWDERS Measurement in a Volumeter

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