Bulk Density Measurement Tester

Product Introduction

Bulk density is a key physical characteristic that affects how a powder or granular material flows, packs, and settles. Unlike true density (which is the mass per unit volume of the solid material itself, excluding voids), bulk density is influenced by factors such as particle size distribution, shape, surface texture, and the degree of compaction.

The standard method for measuring bulk density (or apparent density for pourable materials) involves allowing a representative sample of the material to flow freely under gravity from a funnel or chute of specified dimensions into a receiving container (cup or cylinder) of a precisely known volume. The excess material is then carefully struck off or leveled from the top of the container without compacting the material inside. The mass of the material contained within the known volume is determined using a balance or scale. The bulk density is calculated by dividing the measured mass by the known volume of the container. Variations of the method exist for materials that are not free-flowing, which may involve using a vibrating funnel or other techniques to assist the flow. It is important to distinguish bulk density (loose or poured density) from tapped density, which is measured after a container of powder is subjected to a specific number of taps to achieve a more compact packing.

Meet the standard

ASTM B212 ASTM D1895

ISO 60 ISO 697 ISO 787-11

Product Advantages

Provides objective, quantitative measurement of bulk density, a fundamental property of particulate solids.

Essential data for design, calculation, and control in industries handling powders and granules.

Helps characterize material flowability and packing efficiency.

Relatively simple, quick, and cost-effective test method.

Standard compliant methods are available and widely used.

Useful for quality control, material comparison, and process optimization.

Product Features

Based on typical Bulk Density Measurement Testers for pourable materials:

Stand or frame to support the funnel or chute at a specified height above the receiving container.

Funnel or chute with precise dimensions (e.g., orifice diameter, cone angle) and surface finish as specified by relevant standards.

Receiving container (cup or cylinder) with a precisely known internal volume and dimensions (e.g., 100 cm³, 400 cm³).

Leveling device (e.g., straight edge or spatula) made from appropriate material to strike off excess powder from the top of the receiving container without disturbing the material inside.

Paramètres techniques

Measuring Range: Suitable for samples of varying densities, typically between 1 g and 1 kg.

Measuring Accuracy: Typically within ±0.001 g/cc, ensuring accurate measurements.

Measuring Speed: Typically completes measurements within 5-10 seconds, improving work efficiency.

Measuring Medium: Typically uses water, but other liquids can also be used.

Data Output: Typically features an RS-232 standard interface for easy connection to a computer and printer.

Ease of Operation: Typically utilizes fully automatic electronic technology for simple operation, eliminating the need for manual calculations.

Environmental Compensation: Typically features temperature and solution compensation settings to accommodate varying environmental conditions.

Alarm Function: Typically features upper and lower specific gravity limit settings to indicate whether the sample's specific gravity meets the specified standards.