|Melting Point Apparatus||MPA100 ... from $2795|
|MPA100 — Automated melting point system|
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|MPA100 Melting Point Apparatus
|OptiMelt provides a fast and accurate means of automatically determining the melting points and melting ranges of chemical substances. With microprocessor-controlled temperature ramping, a built-in digital camera, and a selling price that is half that of competing models, OptiMelt offers the best value of any commercially available melting point apparatus.|
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MPA100 Automated Melting Point ApparatusOptiMelt provides a fast and accurate means of automatically determining
OptiMelt is specifically designed for unattended operation. It has a built-in digital camera that continuously captures real-time images of the samples, and it uses digital image processing to determine results. The melting points and melting ranges are prominently displayed on the front panel and automatically recorded into memory for later review.
OptiMelt has an intuitive front panel and is very easy to use.
Simply select a start temperature, ramp rate, stop temperature,
and hit start. Results can be easily seen from across the lab on
the large LCD display.
Samples can be viewed on the front panel through a removable magnification lens. During a measurement, you can flag relevant events by pressing dedicated front-panel buttons. Up to six individual temperatures can be tagged for each sample.
Interactive help is available for all functions and parameters of the instrument. Text and numerical entry keypads are built into the touchscreen interface so that no external keyboard is required.
The small, aluminum oven design, along with microprocessor-controlled temperature ramping, provides fast and repeatable warm-up and cool-down cycling. Programmable ramp rates from 0.1 ºC/min to 20 ºC/min, in 0.1 ºC/min increments, provide measurement flexibility.
The ability to rapidly preheat the oven to a start temperature slightly below an expected melting point minimizes analysis time.
OptiMelt uses a platinum RTD sensor and makes temperature measurements to 400 °C with 0.1°C resolution. It is easily calibrated in the field against certified reference standards and complies with modern Pharmacopeia protocols. The instrument remembers the date of the last calibration which is included in all reports.
OptiMelt meets modern GLP requirements for melting point determination. Up to 24 different analysis methods can be stored in memory. Eight complete melting point reports can also be saved. Records can be displayed on the front panel, printed, or transferred to a host PC via USB. Printouts include technician identification and space for a signature.
Digital Image Processing
The OptiMelt system is unique among melting point analyzers. It has a built-in, high-resolution digital camera to capture real-time images of the samples. It then uses digital image processing to determine phase transitions in the samples.
Unattended melting points, and melting point ranges determined by OptiMelt, closely match visual results. OptiMelts digital image processing algorithm provides a dramatic improvement over optical absorption or reflection techniques.
The MeltView Window software displays live, high-resolution images of each sample during analysis.
The three screen-captured images to the right were collected during
a typical melt. Figure 1 shows the unmelted solid samples, figure
2 reveals the meniscus point, and figure 3 corresponds to the end
of the melt (clear point). Stored images may be recalled at any
time, and can be played back frame-by-frame or as a movie.
Thermometer Input and Timers
OptiMelt is the only melting point apparatus that can also be used as a general-purpose digital thermometer and timer. In between melting point determinations, OptiMelt may be used with a Pt RTD to measure and log temperatures around the lab. Three built-in timers are also available to keep track of timed events during experiments.
|MPA100 Automated Melting Point Apparatus|
|Temperature display||Melting point and melting point range|
|Start temp. range||(Ambient + 10 °C) to 396 °C, 0 °C min. set point|
|Stop temp. range||(Start temperature + 4 °C) to 400 °C|
|Temperature resolution||0.1 °C|
|Ramp rate||0.1 °C to 20 °C per minute (0.1 °C increments)|
|Heat-up time||~10 minutes (50 °C to 350 °C)|
|Cool-down time||~10 minutes (350 °C to 50 °C)|
|Temperature accuracy||±0.3 °C (up to 100 °C)
±0.5 °C (up to 250 °C)
±0.8 °C (up to 400 °C)
|Temperature sensor||Pt RTD (built-in)|
|Oven control||Closed-loop PID|
|Display||Back-lit, touchscreen LCD (5.8")|
|Printer interface||RS-232 serial port. Supports Epson compatible dot-matrix printers.|
|Computer interface||USB. All instrument functions can be queried and controlled through a high-level command set.|
|Dimensions||1.4 mm to 2.0 mm outside dia., 100 mm length|
|Capacity||Up to 3 tubes simultaneously|
|Fill height||2 mm to 3 mm|
|Power||90 to 264 VAC, 47 to 63 Hz, 125 W|
|Operating temperature||0 °C to 40 °C, non-condensing|
|Dimensions||7.5" × 10" × 8.5" (WHL)|
|Warranty||One year parts and labor on defects in materials and workmanship|