The fully automated true density analyzer is a two-station ( 4 station also available ), The instrument can determine true density/absolute density, true volume, and open-cell porosity of solid and foam materials, and is equipped with a constant temperature control system.

Number of Analysis Stations: 2  ( 4 stations optional ) 

Irregular Temperature Mode: Standard

Vacuum Pump System: Optional

Archimedes' Principle - Gas Expansion and Displacement Method: Utilizing Bohr's Law (PV=nRT) for small-molecule inert gases under certain conditions, the sample's skeletal volume (including closed pores) is accurately determined by measuring the volume of gas displaced by the sample within the test chamber, thus obtaining its true density. True density = mass/skeletal volume.

● Number of Analysis Stations: 2 stations  ( 4 stations optional )

● Accuracy: ≤0.02%

● Repeatability: ≤0.01%

● Resolution: ≤0.0001 g/cc

● Each analysis station is equipped with an independent reference cell and pressure system

● Freely switchable bidirectional gas inlet mode, standard reverse gas inlet fine powder mode

● Standard three sample cells (10, 30, and 100 cc), customizable

● Built-in Peltier temperature control, no external circulating water bath required

● Automatic repetitive operation to achieve user-selected allowable accuracy

● Optional vacuum pump for in-situ sample degassing

● User-selectable maximum pressure to prevent sample deformation due to excessive pressure

● Miniature sample cells available for smaller samples

● Automatic or user-selectable pressure equilibration time

● Experimental gas is high-purity helium or high-purity nitrogen

GB/T 40401-2021: Measurement of skeleton density, gas volume displacement method

GBT 5071-2013: Refractory materials—True density test method

MT/T713-1997: True density test method for coal dust

ASTM D6226-2005: Test method for open cell content of rigid microporous plastics

GB/T10799-2008: Rigid foamed plastics—Determination of open and closed cell volume percentage

ASTM—D2856: Standard method for determining the percentage of open cell volume in rigid foamed plastics using an air density meter

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