K90100 Automatic Melting Point Range Apparatus

Test Method
The melting point of a crystalline solid is the temperature at which the solid to liquid phase transition occurs, referenced at one atmosphere (1 ATM) of pressure.

Features and Benefits
• Conforms to BP Appendix 5 - Method 6 and GLP specifications

• Readily interchanged between automatic and manual detection of melting point ranges

• Intelligent Lamp Intensity Control with Soft Start

• Storage capacity for up to 20 sample tests

• User-interactive software and data entry, including easy alphanumeric entry of sample name, ID number, and date

• User selectable operating modes: automatic and manual.


Click on the image to view a larger photo of the instrument.

K90100 Automatic Melting Point Range Apparatus
The Koehler Automatic Melting Point Range Apparatus is the latest technology for microprocessor-based determinations of melting point ranges of crystalline, powdered and polymeric materials, and is used to assess sample purity. Requires approximately 5mg of sample spread uniformly on a glass slide, covered with a glass coverslip. The slide is placed on a uniformly heated, round furnace and subjected to a heating profile as required by the user. Two user operating modes are available: automatic and manual. In the automatic mode, the start and end of melting point range is automatically detected by a photosensing device. In the manual mode, the start and end of melting point range can be selected manually with a key-press by the user. Sample melting point can be determined as per the BP method by the ‘Heat & Cool’ temperature function. The melting process is recorded and viewed on-screen in real-time by a CCD camera. Precise temperature control gives reproducible results to within 1%. The unit contains an automatic temperature safety cut-off feature if no melting points are detected 15°C above the expected melting point or if the oven reaches 315°C. The melting process is magnified, recorded, and viewed on-screen in real-time by a CCD camera. The change in physical appearance of the sample with respect to temperature is recorded, and the start/end of melting is observed automatically. A representation of the entire process can be printed out in graphical form for validation.

Specifications
Conforms to: BP Appendix 5-Method 6; GLP

Visual Image: 10x magnified displayed on monitor

Temperature Range: ambient + 5 to 315°C

Heating Rates: 0.2, 0.5, 1.0, 2.0, 3.0, 6.0, 12.0°C/min

Temperature Readability: 0.1°C

Cooling Time: 20 minutes (300°C to ambient)

Temperature Accuracy:
±0.5°C (ambient + 5 to 200°C)
±0.8°C (200 to 315°C)

Sample size: 5 mg (approx.)

Sample Holder: Glass Slide 1 ± 0.02mm thick

Sample Cover: Glass Coverslip 0.17mm thick

Temperature Sensor: Pt-100 (2 wire RTD)

Test Storage: Up to 20 tests with parameters

Electrical Requirements
115V, 60Hz, Single Phase
220V, 50Hz, Single Phase

Dimensions lxwxh,in.(cm)
Main Unit: 16.5x12.25x13 (42x31x33)
Monitor: 8x5.5x5.5 (20x14x14)
Net Weight: Main Unit: 22 lbs (10 kg)
Monitor: 1.8 lbs (0.8 kg)

Shipping Information
Shipping Weight: 29 lbs (13 kg)
Dimensions: 3.6 Cu. ft.

Ordering Information
Catalog
Number
Product Description
Electrical Requirements
K90100 Automatic Melting Point Apparatus
115V 60Hz
K90190
Automatic Melting Point Apparatus
220V 50Hz

Accessories
Catalog
Number
Product Description
K90104
Glass slides and cover slips
(pack of 100)

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