Take Melting Point measurements of up to three samples at once for greater efficiency. Manually set the heating rate between 1°C and 20°C per minute, up to a maximum of 250°C. Lowering the heating rate as you near the expected melting point temperature will increase the accuracy of the reading. Simple to operate, the instructions are printed directly on the unit. Place your sample in a capillary tube and insert it into the aluminum block. Observe the sample through the magnifying lens until the melt occurs and read the melt temperature from the thermometer.