Chengdu Jingxin JL-A3 Powder Flowability, Angle of Repose, and Bulk Density Tester

Overview

The Chengdu Jingxin JL-A3 Powder Flowability, Angle of Repose, and Bulk Density Tester is a manually operated, benchtop physical property analyzer engineered for standardized, repeatable characterization of dry free-flowing powders and granular solids. It implements three classical ASTM- and ISO-aligned gravimetric and geometric methods—Hall Flowmeter (GB/T 1482–2010, equivalent to ISO 4490), bulk density by funnel method (GB/T 1479.1–2017, aligned with ISO 3953), and angle of repose determination (GB/T 16913–2008, consistent with ASTM D6393)—within a single integrated mechanical platform. Unlike automated rheometers or shear cell systems, the JL-A3 relies on fundamental principles of gravity-driven flow, static pile formation, and volumetric displacement to deliver traceable, operator-controlled measurements essential for QC labs, R&D screening, and regulatory documentation in GMP-compliant environments. Its design prioritizes mechanical stability, dimensional repeatability, and material compatibility—critical for reproducible powder handling assessment across battery cathode materials, pharmaceutical excipients, metal AM feedstocks, food ingredients, and catalyst supports.

Key Features

• Triple-function mechanical platform supporting Hall flow time, angle of repose, and bulk density measurement per recognized national and international standards.
• Stainless steel (AISI 304) construction throughout: funnel, sample cup, repose plate, and graduated ruler—all precision-machined and surface-finished to minimize adhesion, wear, and deformation during repeated use.
• Adjustable vertical positioning system with calibrated micrometer-style height adjustment knob enables precise control over funnel-to-plate or funnel-to-cup distance—ensuring strict compliance with GB/T 1482 (40 mm drop height) and GB/T 1479.1 (20 mm clearance).
• Integrated slide gate mechanism at the funnel outlet eliminates manual finger blocking; ensures consistent start/stop timing and prevents premature discharge during sample loading.
• Modular configuration: standard 5 mm orifice (for coarse to medium powders); optional 2.5 mm orifice available for finer materials; custom orifices can be supplied upon request to meet specific application requirements.
• Dual-scale measurement capability: direct visual reading via engraved stainless steel ruler (0–100 mm range, 1 mm graduation) and digital data processing via dedicated software.

Sample Compatibility & Compliance

The JL-A3 is validated for dry, non-cohesive to moderately cohesive powders with particle sizes ranging from ~10 µm to 500 µm. It is not intended for wet, hygroscopic, electrostatically charged, or highly fibrous materials without prior conditioning (e.g., oven drying at 105 °C per GB/T 1479.1). All test procedures comply with Chinese National Standards (GB) that are technically harmonized with corresponding ISO and ASTM methods: GB/T 1482–2010 ≡ ISO 4490:2018 (metal powders), GB/T 1479.1–2017 ≡ ISO 3953:1993 (bulk density), and GB/T 16913–2008 ≡ ASTM D6393–14 (flow function index derivation). The instrument supports GLP documentation workflows through its software’s audit-ready data logging, user-defined test IDs, and timestamped report generation—meeting foundational requirements for FDA 21 CFR Part 11–aligned recordkeeping when deployed with controlled access and electronic signature protocols.

Software & Data Management

The included Windows-based calculation software (v3.2+) accepts manual input of raw measurements—including flow time (s), pile height (mm), repose plate radius (mm), cup mass (g), and filled cup mass (g). It automatically computes flow rate (g/s), angle of repose (°), and bulk density (g/mL), applying standard geometric and arithmetic formulas defined in GB/T 16913 and GB/T 1479.1. Reports are exportable in native Word (.docx), Excel (.xlsx), and PDF formats—with bilingual (Chinese/English) language toggle and customizable header fields (lab name, analyst ID, date, instrument serial number). No cloud connectivity or remote telemetry is implemented; all data reside locally, preserving data sovereignty and simplifying IT validation in regulated settings. Software installation requires no administrative privileges and operates offline—ideal for air-gapped QC laboratories.

Applications

• Battery materials: Screening cathode/anode powders (e.g., NMC, LFP, graphite) for uniform feeding into electrode coating lines.
• Pharmaceutical manufacturing: Pre-formulation assessment of excipient flow behavior prior to direct compression or capsule filling.
• Metal additive manufacturing: Qualification of spherical metal powders (Ti-6Al-4V, Inconel 718, AlSi10Mg) against ASTM F3049 acceptance criteria.
• Food & nutraceuticals: Monitoring consistency of spray-dried dairy powders, starches, and vitamin blends during batch release.
• Quality assurance labs: Routine verification of supplier powder specifications per contractual technical data sheets.
• Academic research: Teaching core powder mechanics concepts—including arching propensity, interparticle friction, and packing efficiency—in materials science curricula.

FAQ

What standards does the JL-A3 comply with?
It implements GB/T 1482–2010 (equivalent to ISO 4490), GB/T 1479.1–2017 (equivalent to ISO 3953), and GB/T 16913–2008 (aligned with ASTM D6393) for flow, bulk density, and angle of repose testing.
Can the instrument measure cohesive or damp powders?
No—samples must be dry and free-flowing. Hygroscopic or damp powders require pre-drying at 105 °C per GB/T 1479.1 before testing.
Is calibration certification provided with the unit?
The JL-A3 is supplied with a factory verification certificate confirming dimensional accuracy of the funnel, cup, and ruler against traceable metrology standards; annual recalibration of mechanical components is recommended.
Does the software support LIMS integration?
Not natively—the software exports structured .xlsx files compatible with most LIMS import modules; custom API integration is available upon engineering consultation.
What maintenance is required?
Routine cleaning with lint-free cloth and isopropyl alcohol; periodic inspection of funnel orifice for burrs or residue; no lubrication or firmware updates needed.