New Mettler FP-1 Determines Melting and Boiling Points Automatically The Mettler FP-1 brings new significance and efficiency to melting and boiling point determinations. Once the instrument is programmed and started, determinations are completed and results displayed automatically. It completely eliminates the need for an operator's constant attention and close visual observation.
Overall performance is further enhanced by a high speed cooling fan which provides rapid cool-down between runs. OBJECTIVE RESULTS
As the sample in a melting point test changes from solid to liquid, its light absorption decreases and it becomes transparent. The Mettler FP-1 detects changes in intensity of light transmitted through the sample to a precisely-calibrated photocell1. This sends an immediate stop signal to its digital counter when the melting point is reached.
ALL-DIGITAL DATA
Digital readout eliminates subjective errors associated with reading mercury thermometers and interpreting recording charts. In addition, it provides greatly improved speed and accuracy when reading results. By means of a hold feature, results of a determination are retained on the readout panel until the instrument is cleared for its next run.
All it takes.
The instrument combines a fully-transistorized linear temperature program and control system, a precision platinum resistance thermometer, electronic sensing of the endpoint, and all-digital display of results. It provides greatly improved analytical data, with greater speed and precision than any other system for determining melting or boiling points.
Melting sensed electronically. All numbers, no eyeball fatigue. RECORDING CAPABILITY
Used with a standard time-base recorder, the Mettler FP-1 can provide curves showing changes in light transmission as sample temperature increases. This is a useful aid in studying the dynamics of the melting process and in analyzing the purity of compounds.
MULTIPLE DETERMINATIONS
The Mettler FP-1 can perform three melting point determinations simultaneously, each with its result displayed in digital form. This not only increases operating efficiency, but makes the running of mixed melting points convenient and truly practical.
Boiling, too.
Boiling point determinations are made according to an adaptation of the classical Siwoloboff method. Dark field illumination enables a calibrated photocell to detect bubbles released by boiling. When bubbles are released with sufficient frequency to indicate true boiling, a digital counter registers the exact temperature. Both melting and boiling point determinations thus are completely objective. There is no need for individual choice or estimation on the part of the operator.
Three at a time.
l - H.F. Stimson, "The International Temperature Scale", N.B.S. Jour. Res., 42, p. 209-217, (1949).
It even draws pictures. LITERATURE AVAILABLE
Ask for literature describing the new Mettler FP-1 or request a demonstration or trial in your own laboratory. Write Mettler Instrument Corporation,20 Nassau Street, Princeton, New Jersey 08540.
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