Monday, 26 October 2020 15:43

TF Series Tube Furnaces

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TF Series Laboratory Technician Insert Crucible into Tube Furnace

TF Series Tube Furnaces

The LECO Cornerstone® TF Tube Furnaces are versatile, energy-efficient resistance furnaces designed for baking crucibles to reduce contaminants that would interfere with analytical results.

  • Long-life molybdenum disilicide heating elements have an operating temperature range of 800 °C to 1350 °C
  • Integrated digital furnace controller displays set point or actual temperatureand provides overtemperature protection
  • TF4 Quad Tube Furnace system has six heating elements
    • Allows operator to burn off crucibles in four combustion tubes for demanding, high-volume installations supplying two to four units
  • TF2 Dual Tube Design has four heating elements
    • Efficiently supplies lower volume installations of one to two systems

The table below illustrates the impact of preheating 528-018 Crucibles on carbon and sulfur results of a high purity iron reference material certified at 5 ppm carbon and 2 ppm sulfur (1250 °C for 15 min).

tf crucible blank furnace comparisons

The new furnace design and increased crucible capacity use 60% less energy than the previous models for significant savings inoperating costs. The chart below exhibits the differences in operating costs while operating the various systems at 1350 °C, considering continuous operation with a full load of crucibles.
tf tube furnace efficiency comparison



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TF Series Details

Carbon and Sulfur Analysis by Combustion with the CS844

  • Models
    1. TF4 Quad Tube Furnace

    1. TF2 Dual Tube Furnace

VX4 | Inverted Metallurgical Microscope | LECO

Inverted Metallurgical Microscope

The VX4 is a compact and practical microscopy solution for any metallurgical laboratory. This microscope comes equipped with a vibrant LED polarized light source that is perfect for inspecting mounted and unmounted samples.

  • Variable LED light source with built-in lever condenser with field and aperture diaphragms
  • Trinocular head with 10X/22 mm adjustable focusing eyepieces
  • Revolving nosepiece holds up to five objectives
    • 5X, 10X, 20X, and 50X objectives included
    • Optional 100X objective available
  • Brightfield observation and 360 degree polarizer/analyzer
  • Coaxial coarse and fine focus adjustment
  • Ergonomic mechanical XY stage
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VX4 Details


  • Models
    1. VX4 Inverted Microscope