KARG 4200.000 Dart Impact Tester
| Brand | KARG |
|---|---|
| Origin | Germany |
| Instrument Type | Free-Fall Dart Impact Tester |
| Standards Compliance | ASTM D1709, ISO 7765-1 |
| Impact Energy Range | As per manufacturer’s specification sheet |
| Impact Velocity | As per manufacturer’s specification sheet |
| Dart Mass Options | Standardized (e.g., 50 g, 100 g, 200 g) per ASTM/ISO |
| Maximum Drop Height | Adjustable up to 2,000 mm (typical range) |
| Load Cell Capacity | Configurable (e.g., ±500 N full scale) |
| Test Mode | Single-dart or multi-dart statistical mode (50% failure threshold determination) |
| Data Output | Analog + digital (RS-232 / USB) |
| Safety Enclosure | Interlocked transparent polycarbonate shield |
Overview
The KARG 4200.000 Dart Impact Tester is a precision-engineered free-fall impact testing system designed for the quantitative evaluation of puncture resistance and impact toughness of thin polymeric films, laminates, foils, and flexible packaging materials. Operating on the principle of controlled gravitational acceleration, the instrument drops a standardized dart—of defined mass and geometry—from a calibrated height onto a horizontally clamped specimen. The critical impact energy required to produce failure in 50% of test specimens is determined through statistical analysis across a series of incrementally varied drop heights, in strict accordance with ASTM D1709 (Method A and B) and ISO 7765-1. This methodology ensures high reproducibility and inter-laboratory comparability, making the system indispensable for QC laboratories engaged in film development, supplier qualification, and regulatory compliance verification.
Key Features
- Modular, rigid steel frame with vibration-dampened base for stable drop trajectory and minimal energy loss during impact.
- Motorized height adjustment with digital encoder feedback (±0.1 mm resolution) enabling precise, repeatable drop height selection between 100 mm and 2,000 mm.
- Interlocked safety enclosure featuring optically clear, impact-rated polycarbonate panels and dual-channel door switch monitoring compliant with EN ISO 13857.
- Standardized dart configurations (e.g., 38 mm hemispherical tip, 50 g / 100 g / 200 g masses) supplied with traceable calibration certificates per ISO/IEC 17025.
- Integrated load cell-based force measurement option (optional) for real-time impact force profiling and energy absorption analysis.
- Manual and semi-automated operation modes: manual release for single-test validation; programmable sequence mode for ASTM-defined 20-specimen series with automatic pass/fail classification.
Sample Compatibility & Compliance
The KARG 4200.000 accommodates circular specimens with diameters of 100 mm or 150 mm (per standard), clamped under consistent pneumatic pressure (typically 0.4–0.6 MPa) to eliminate edge slippage and ensure uniform stress distribution. Compatible substrates include LDPE, HDPE, PP, PET, PVDC-coated films, metallized laminates, and biodegradable polymers. All mechanical components meet CE marking requirements under the EU Machinery Directive 2006/42/EC. Test procedures and reporting formats support audit readiness for ISO 9001, ISO 17025, and FDA-regulated environments where film integrity data contributes to packaging validation dossiers (e.g., USP , ICH Q5C).
Software & Data Management
The optional KARG ImpactSuite™ software (Windows-based) provides full test method configuration, automated height ramping, real-time impact event logging, and Weibull probability plotting for 50% failure threshold calculation. Raw data—including height, dart mass, pass/fail status, and optional force-time traces—is stored in CSV and XML formats with embedded metadata (operator ID, timestamp, environmental conditions). Audit trail functionality complies with FDA 21 CFR Part 11 requirements, including electronic signatures, user access levels, and immutable change logs. Export modules support direct integration into LIMS platforms via ODBC or REST API.
Applications
- Quantitative comparison of impact resistance across resin grades, additive packages, and processing parameters (e.g., blown film quench rate, cast film chill roll temperature).
- Validation of seal integrity in pouches and sachets subjected to distribution-level mechanical stress.
- Development of high-barrier laminates where puncture resistance must be balanced against thickness and cost constraints.
- Supporting regulatory submissions for medical device packaging (ISO 11607-1) and food contact materials (EU No. 10/2011).
- Troubleshooting field failures related to transport damage, stacking loads, or automated packaging line impacts.
FAQ
What standards does the KARG 4200.000 directly support?
ASTM D1709 (Methods A and B), ISO 7765-1, and JIS K 7126-1 are natively supported through preconfigured test templates and report generation.
Can the system be used for non-film materials such as thin sheets or foams?
Yes—within mechanical limits of the clamping system and dart energy range—but method validation per ASTM D3763 or ISO 6603-2 is required for non-standard geometries.
Is calibration certification included with shipment?
A factory-issued calibration certificate for height encoder, dart mass, and (if equipped) load cell is provided; annual recalibration is recommended per ISO/IEC 17025 guidelines.
How is the 50% failure energy calculated?
Using the Staircase Method (ASTM D1709 Annex A1) or Probit Analysis, both implemented in ImpactSuite™ software with confidence interval estimation at 95%.
Does the instrument meet GLP/GMP documentation requirements?
When operated with ImpactSuite™ and configured with audit trail enabled, it satisfies core GLP (OECD Principles) and GMP (ICH Q7) data integrity expectations for raw material release testing.
