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Cometech QC-652 Series Melt Flow Index Tester (MFR/MVR) | ASTM D1238 & ISO 1133
Cometech QC-652 Series Melt Flow Index Tester measures MFR and MVR (MI/MFI) for thermoplastics in compliance-focused lab and production QC environments.
It supports ISO/ASTM test-method workflows and uses a touch-panel interface to guide operators step-by-step through the test.
Optional mechanisms (MVR volume test and high-flow material block) help adapt the instrument to different polymer flow behaviors and test needs.
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Overview
Cometech QC-652 series Melt Flow Index Tester is designed to measure thermoplastic MFR and MVR (also known as MI/MFI) under standardized temperature and load conditions.
It supports ISO/ASTM standard test methods and uses a touch-panel interface that guides operators through the test procedure.
The controller includes analysis/calculation functions and supports flash drive (USB) saving/output for results.
Technical Specifications
| Product serial (series) | QC-652B / QC-652C / QC-652D / QC-652E. |
|---|---|
| Conforming standards | ASTM D1238, ASTM D3364, ISO 1133, GB/T 3682. |
| Temperature range | QC-652B: 50–300°C; QC-652C: 50–400°C; QC-652D (corrosion): 50–300°C; QC-652E (corrosion): 50–400°C. |
| Temperature calibration concept | Three temperature points (180/250/300°C) and multiple measurement points (10/30/50/70 mm above the die) are shown in the spec/explanation materials. |
| Counter resolution | 0.01 s. |
| Piston push rod weight | 100 g. |
| Automatic cut | Interval time 1–300 seconds can be set. |
| Heat protection | Standard thermal insulation shield. |
| Heater size (barrel) | 9.55 mm ± 0.01 mm. |
| Die (hole mold) | 2.095 mm ± 0.005 mm. |
| Weights (optional) | Common standard stainless-steel weights: 1100 g, 2060 g, 3700 g, 4900 g, 9900 g, 12400 g, 19900 g, 21500 g; customizable. |
| Standard accessories | Cleaning brush, measuring cups, funnel, die calibration plug gauge. |
| Machine weight | 40 kg. |
| Dimensions | 47 × 38 × 48 cm (47 × 38 × 60 cm with MVR part). |
| Power | 220 V single phase 50/60 Hz (B: 8A; C: 10A; D: 8A; E: 10A). |
Features & Functions
- MFR (A/weight method) and MVR (B/volume method) workflows are illustrated, helping match the test output to your reporting requirement.
- Touch-panel operation with on-controller steps, including standby/preheating countdown guidance shown in the operation images.
- Temperature-control focus: multi-point calibration concept and PID heating control are highlighted for stable temperature and improved efficiency.
- Auto cutting or manual cutting selection; results can be calculated and stored in the controller and/or output to USB as shown.
Configuration & Options
- Choose model by temperature range and environment: QC-652B (50–300°C), QC-652C (50–400°C), and corrosion versions QC-652D/E.
- MVR mechanism (for B method) is available as an optional add-on.
- High-MI material block mechanism is available to help prevent plastic flow during preheating for high-flow plastics.
Documents & Downloads
Applications & Case Studies
- Melt flow index testing according to ASTM D1238 / ISO 1133 for thermoplastics (incoming QC, batch comparison, process control).
- Common use contexts include plastics and related medical product/mask material applications as listed for this product series.
Support & Compatibility
- Flash drive (USB) saving/output is supported for test data handling.