Abstract: A fraction collector includes a base unit and a turntable rotatably mounted on the base unit for supporting a plurality of collection tubes. The upper horizontal surface of the base unit includes a receptacle which is disposed to collect fluids discharged onto the base unit. The turntable is enclosed and includes a discharge port which is aligned over the receptacle when the turntable is mounted on the base unit. In this way, fluids which are intentionally or unintentionally discharged into the turntable will be collected in the receptacle 46. Receptacle 46 also includes a discharge port which may be connected to a disposal site, typically by flexible tubing.

Abstract: Apparatus and method for injection of samples directly onto a column in a gas chromatograph with injection occurring in a temperature controlled zone outside the oven. The apparatus combines a guide means and valve assembly in alignment with an injection and thermal transfer assembly. In the guide means and valve assembly a radial seal engages the injection means to seal the injection volume, thereby eliminating back flash. In the injection and thermal transfer assembly the capillary column is centered and held in fixed position within a duct means. Means is provided to lower the temperature of the capillary column to a temperature below the vaporization temperature of the liquid sample prior to injection. After injection, means is further provided to raise the temperature of the capillary column to a temperature above the volatilization temperature of the liquid sample to vaporize it and pass it into the capillary column.