2-bath myograph (myo2)

The myograph is designed for the study of microvessels with diameters between 100 µm and 2 mm, and maximum length of 3.5 mm. The small vessels are mounted between two tungsten wires fixed to two supports.

the myograph includes:

• two independent 10 ml baths, with drain hole and frit glass bubbler to provide oxygenation and mixing of liquids.
• Plexiglas body with internal passages for circulation of heating fluid.
• two tubes per bath, one to bring physiological liquid (pushed by carbogen) and the other to control liquid level (excess drawn by vacuum source). Physiological liquid is heated in a coil.
• two high-sensitivity isometric transducers:
  • measuring range: +/- 10 g
  • maximum acceptable overload: +/- 20 g
  • full-scale output: 10 mV/V  
  • combined error (nonlinearity, hysteresis,
    repeatibility: +/-1% of PE)
  • natural frequency response: 600 Hz
  • excitation voltage: 10 V
• two precision Vernier positioners.
• two pairs of tungsten wire supports. One support is removable, so vessels can be mounted outside of the bath.
• tungsten wire diameter: 25 µm, 50 µm or 100 µm.

available options:

• bath sizes: 2 x 3 ml, 2 x 5 ml, 2 x 10 ml, 1 x 20 ml bath.
• AMPLI-SG2 two-channel amplifier.
• THERMOREG hot water circulation and physiological preheating system.
• iox software for data acquisition and analysis.

1-bath myograph (myo1)

Same as myo2 (above), but with one bath only. Can be upgraded to myo2 (the bath assemblies are interchangeable).