Archive for February 29, 2012

What is requirement on the calibrator chart according to ASTM B330 Standard Test Method for Fisher Number of Metal Powders and Related Compounds using a fisher sub sieve sizer?

Before proceeding with standardization of the Fisher Sub Sieve Sizer,the following items shall be checked:The chart shall be properly aligned horizontally with the indicator pointer.

Fisher Sub Sieve Sizer

HMK-22 Fisher Sub Sieve Sizer / Average Particle Size Analyzer by Aimsizer Scientific

HMK-22 Fisher Sub Sieve Sizer / Average Particle Size Analyzer by Aimsizer Scientific

What is the application of hall flowmeter method according to international standard ISO 4490 Metallic powders – Determination of flow rate by means of a calibrated funnel (Hall Flowmeter)?

The method is applicable only to powders which flow freely through the specified test orifice.

Hall Flow Meter

AS-300 Hall Flowmeter by Aimsizer Scientific

AS-300 Hall Flowmeter by Aimsizer Scientific

How many test portions is required during determining the apparent density of powder according to ISO 3923-2 Metalllic powders – Determination of apparent density – Part 2: Scott volumeter method?

Carry out the determinations on three test portions.

Scott Volumeter

AS-200 Scott Volumeter by AimSizer Scientific

AS-200 Scott Volumeter by AimSizer Scientific

What affect the bulk density accroding to USP 616 Bulk Density and Tapped Density of Powders using a tap density tester?

The bulking properties of a powder are dependent upon the preparation,treatment,and storage of the sample,i.e.how it was handled.The slightest disturbance of the powder bed may result in a changed bulk density.

Tap Density Tester

AS-100 Tap Density Tester

AS-100 Tap Density Tester

What is the requirement on the balance used in fisher number test by a fisher sub sieve sizer according to ASTM B330 Standard Test Method for Fisher Number of Metal Powders and Related Compounds?

The balance has a capacity of at least 50 g and a sensitivity of 0.001 g.

Fisher Sub Sieve Sizer

HMK-22 Fisher Sub Sieve Sizer / Average Particle Size Analyzer by Aimsizer Scientific

HMK-22 Fisher Sub Sieve Sizer / Average Particle Size Analyzer by Aimsizer Scientific

What is the scope of international standard ISO 4490 Metallic powders – Determination of flow rate by means of a calibrated funnel (Hall Flowmeter)?

This international Standard specifies a method for determining the flow rate of metallic powders, including powders for hardmetals,by means of a calibrated funnel (Hall Flowmeter).

Hall Flow Meter/Flowmeter Funnel

AS-300 Hall Flowmeter by Aimsizer Scientific

AS-300 Hall Flowmeter by Aimsizer Scientific

To what extent determine the mass of the powder used in scott volumeter method testing the apparent density of a powder according to ISO 3923-2 Metalllic powders – Determination of apparent density – Part 2: Scott volumeter method?

Determine the mass of the powder to the nearest 0.05 g.

Scott Volumeter

AS-200 Scott Volumeter by AimSizer Scientific

AS-200 Scott Volumeter by AimSizer Scientific

How to express the bulk density according to international standard USP 616 Bulk Density and Tapped Density of Powders?

The bulk density is expressed in grams per mL although the international unit is kilograms per cubic meter because the measurements are made using cylinders.It may also be expressed in grams per cubic centimeter.

Tap Density Tester

AS-100 Tap Density Tester

as-100 tap density tester

How to adjust the sample packing assembly of a fisher sub sieve sizer according to ASTM B 330 Standard Test Method for Fisher Number of Metal Powders and Related Compounds?

Adjust the sample packing assembly (1) as described in the manufacturer’s directions with the exception that the plugs and paper disks are not inserted in the sample tube,but are merely stacked together and placed between the brass support and the “flat” of he bottom of the rack,and (2) as previously described except that a specially made baseline gauge is used instead of the plugs and paper disks.This baseline gauge shall have a height of 19.3+-0.1mm.Check all plug heights when new plugs are purchased and periodically thereafter to make sure all are equal in height.

HMK-22 Fisher Sub Sieve Sizer

HMK-22 Fisher Sub Sieve Sizer / Average Particle Size Analyzer by Aimsizer Scientific

HMK-22 Fisher Sub Sieve Sizer / Average Particle Size Analyzer by Aimsizer Scientific

What is explanation of Bias according to ASTM B213 Standard Test Method for Flow Rate of Metal Powders by using a hall flowmeter funnel?

No statement can be made about bias,because there is no standard reference material for flow rate measurement.

AS-300 Hall Flowmeter

AS-300 Hall Flowmeter by Aimsizer Scientific

AS-300 Hall Flowmeter by Aimsizer Scientific