CMPA3 — Automatic Drug & Sliding Melting Point Analyzer
OVERVIEW
A melting point apparatus measures the temperature at which a substance changes from solid to liquid. In organic chemistry, melting point determination is a fundamental tool for identifying a substance and a key method for assessing its purity. Melting point instruments therefore play an important role in the chemical industry, medical laboratories and drug research, and are essential tools in the production of pharmaceuticals, fragrances, fuels and other organic crystalline substances.
CMPA3 is a professional drug melting point analyzer designed for both conventional capillary melting point and sliding melting point measurements. It combines precise digital temperature control, automatic detection and convenient one-button switching between liquid media to deliver fast, reliable and repeatable results.
The instrument offers fully automatic detection (0.5 class), photoelectric measurement of the melting process, stepless heating rate adjustment from 0.1 °C/min to 10 °C/min and four evaluation modes (standard, long melting range, learning and sliding melting point) to adapt to many different sample types.
COLO.SCIENCE KNOWLEDGE
Learn more about melting point determination in practice
Read our COLO.Science article covering melting point principles, pharmacopoeial standards and practical examples with COLO melting point instruments.
TYPICAL APPLICATIONS
- Pharmaceutical melting point and sliding melting point determination
- Quality control of waxes, oils and ointments
- Melting behaviour of lipsticks, balms and other cosmetic products
- Food industry waxy and fatty samples
- Research and development of APIs and intermediates
- Teaching and routine analysis in university and QC laboratories
MODELS & DIMENSIONS
| Model | Measurement types | Evaluation modes | Dimensions / weight |
|---|---|---|---|
| CMPA3 | Conventional capillary melting point & sliding melting point | Standard / long range / learning / sliding melting point | See catalog (PDF) |
TECHNICAL SPECIFICATIONS
| Model | CMPA3 |
| Measurement principle | Photoelectric detection with capillary tube method |
| Measurement types | Sliding melting point and conventional melting point |
| Detection mode | Fully automatic detection (0.5 class) with automatic start / end point recognition |
| Heating rate | Stepless adjustment from 0.1 °C/min to 10 °C/min |
| Temperature control | Digital temperature control with precise furnace temperature regulation |
| User interface | LCD display with numeric keypad, simple menu navigation |
| Calibration | Supports national reference materials or user standards, 1–3 point temperature calibration |
| Interfaces | USB (PC connection) and RS232 (printer) |
| Power / dimensions / weight | See catalog (PDF) for detailed values |
MAIN TECHNICAL PARAMETERS
| Model | CMPA3 |
| Instrument grade | 0.5 level |
| Detection mode | Fully automatic detection |
| Sample loading method | Capillary tube method |
| Temperature range | Ambient to 280 °C |
| Minimum temperature resolution | 0.1 °C |
| Heating rate | 0.1–10 °C/min stepless adjustable |
| Heating rate error | ≤ 5 % |
| Measurement accuracy | ±0.4 °C (< 200 °C); ±0.7 °C (≥ 200 °C) |
| Repeatability | 0.2 °C (heating rate 0.2 °C/min) / 0.3 °C (heating rate 1.0 °C/min) |
| Heating/cooling time | ≈ 3 min / 3 min (50–280 °C) |
| Measurement modes | Standard, long melting range, learning, sliding melting point |
| Number of capillaries | 1 |
| Capillary dimensions | Outer Ø 2.5 mm / inner Ø 2.0 mm, length 50 mm (sample tube) Outer Ø 1.4 mm / inner Ø 1.0 mm, length 90 mm (standard capillary) |
| Sample filling height | 10 mm (after inserting the capillary, liquid level must be ≥ 10 mm above sample) |
| Calibration liquids | Supports two liquid calibration media, one-key switching |
| Display | 4.3″ LCD |
| Interface | USB (PC connection) and RS232 (printer) |
| Printing function | Yes |
| Measurement reports | Supports direct printing or saving via APP/PC software |
| User management | Included (multi-user management) |
| Preset measurement methods | Yes (factory-preset programs) |
| Power supply | 220 V ±10 % AC, 50/60 Hz, 100 W |
| Dimensions (L × W × H) | 345 × 245 × 215 mm |
| Weight | Approx. 4.5 kg |
STANDARD DELIVERY & ACCESSORIES
- CMPA3 automatic melting point analyzer
- Power cable
- Basic user manual / quick start guide
- Standard accessory kit (capillary holders and basic consumables)*
- USB cable for PC connection*
- RS232 cable for external printer*
- Optional: external RS232 printer
- Optional: additional capillaries and reference materials
*Exact contents according to current catalog and order confirmation.
