Best Plastic Testing & Quality Control Products Compared
Selecting the right plastic testing equipment is critical for maintaining quality control in polymer processing. This comprehensive comparison evaluates leading testing systems for melt flow index, tensile strength, impact resistance, and thermal analysis to help QC managers make informed decisions.
Instron 5900 Series Universal Testing System
9.2/10Industry-leading tensile and compression testing for polymers
$40,000 - $80,000
Pros
- +ASTM D638 compliant tensile testing with precise load control
- +Advanced software for stress-strain curve analysis
- +Modular design accommodates multiple test fixtures
- +Temperature chamber compatibility for conditioned testing
Cons
- -High initial investment cost
- -Requires specialized training for operators
TA Instruments Q2000 DSC
9/10Precision thermal analysis for polymer characterization
$55,000 - $75,000
Pros
- +High-sensitivity heat flow measurements
- +Automated sample handling options
- +Comprehensive TRIOS software suite
- +Excellent baseline stability and reproducibility
Cons
- -Complex setup for routine QC applications
- -High consumable costs for DSC pans
Dynisco LMI5000 Melt Flow Indexer
8.8/10Automated melt flow testing with ASTM D1238 compliance
$25,000 - $35,000
Pros
- +Fully automated test cycle reduces operator variability
- +Precise temperature control ±0.1°C accuracy
- +Built-in cut timer and weight calculation
- +Data logging and trend analysis capabilities
Cons
- -Limited to standard ASTM test conditions
- -Requires regular calibration maintenance
Tinius Olsen Impact104 Pendulum Tester
8.4/10Versatile Izod and Charpy impact testing system
$18,000 - $28,000
Pros
- +Interchangeable pendulums for different energy ranges
- +Digital readout with statistical analysis
- +ASTM D256 and D6110 compliant testing
Cons
- -Manual specimen loading increases test time
- -Limited automated data collection features
Feature Comparison
| Feature | Instron 5900 Series Universal Testing System | TA Instruments Q2000 DSC | Dynisco LMI5000 Melt Flow Indexer | Tinius Olsen Impact104 Pendulum Tester |
|---|---|---|---|---|
ASTM Compliance Adherence to standard test methods for consistent results across laboratories | Excellent | Excellent | Excellent | Good |
Automation Level Degree of automated testing to reduce operator influence and increase throughput | Good | Excellent | Excellent | Fair |
Data Management Software capabilities for test data collection, analysis, and reporting | Excellent | Excellent | Good | Fair |
Multi-Material Testing Versatility to test different polymer types and grades effectively | Excellent | Excellent | Good | Good |
Maintenance Requirements Frequency and complexity of routine maintenance and calibration needs | Good | Fair | Fair | Excellent |
Verdict
Each testing system excels in specific applications. The Instron 5900 leads in mechanical property testing versatility, while the Dynisco LMI5000 is unmatched for routine melt flow QC. The Tinius Olsen Impact104 offers reliable impact testing at competitive pricing, and the TA Q2000 DSC provides comprehensive thermal analysis capabilities. Selection depends on your primary testing requirements, throughput needs, and budget constraints.
High-volume incoming inspection QC
Dynisco LMI5000 Melt Flow Indexer
Automated operation and rapid test cycles maximize throughput while ensuring consistent results for material verification
R&D material characterization
Instron 5900 Series Universal Testing System
Comprehensive mechanical testing capabilities support product development and failure analysis investigations
Cost-effective impact testing
Tinius Olsen Impact104 Pendulum Tester
Reliable Izod/Charpy testing with lower capital investment suitable for smaller labs
Thermal property analysis
TA Instruments Q2000 DSC
Precision thermal analysis for glass transition, melting point, and crystallinity measurements
FAQ
What's the difference between ASTM D1238 Method A and Method B for melt flow testing?
Method A measures mass flow rate (MFR) in grams per 10 minutes, while Method B measures volumetric flow rate (MVR) in cubic centimeters per 10 minutes. MVR is preferred for comparing materials with different densities, while MFR is more common for quality control of similar polymer grades.
How often should plastic testing equipment be calibrated?
Most testing equipment requires annual calibration with quarterly verification checks using certified reference materials. High-use instruments may need more frequent calibration - melt flow testers typically need temperature verification monthly, while load cells on tensile testers should be checked every six months.
Can I use the same test specimen for multiple tests?
Generally no - most plastic tests are destructive and alter the material structure. However, you can sometimes perform non-destructive tests like density measurement before destructive testing. Always follow ASTM guidelines for specimen preparation and conditioning between tests.
What's the best way to correlate lab test results with real-world processing performance?
Establish statistical relationships between key lab properties and processing metrics through designed experiments. For injection molding, melt flow index often correlates with fill pressure, while tensile properties relate to part strength. Work with your material supplier to understand these relationships for specific polymer grades.
Should I test every incoming lot of plastic resin?
Risk-based sampling is most practical - test critical properties on every lot of high-value or critical applications, but use statistical sampling for routine grades. Focus on properties that most affect your process, such as melt flow for injection molding or impact strength for structural parts.