Agilent

The catalog entries for Agilent are grouped into three practical categories: HPLC/UHPLC systems, bench gas chromatographs, and optical power heads plus interface modules. Representative HPLC systems in the catalog include the Agilent 1260 Infinity, the Agilent 1200 HPLC, and the Agilent 1100 Series. Bench GC systems include the Agilent 7890A, 7890B and the 6890N. Optical test equipment includes power heads such as the Agilent 81624A, 81624B, 81623B, 81521B and 81626B and interface modules such as the Agilent 81533A.

Key selection parameters for liquid chromatography are operating pressure, flow-rate range, injection volume, sample capacity and column handling. The Agilent 1260 Infinity is specified as an HPLC/UHPLC platform with a maximum operating pressure of 600 bar (8700 psi) and supports up to three columns (up to 30 cm length) in some configurations. The 1200 Series and 1100 Series are modular HPLC platforms with maximum operating pressure commonly at 400 bar (5880 psi) for standard modules (the 1200 Series RRLC option is specified at 600 bar). For sample throughput and autosampler planning, the standard tray sample capacity is 100 × 2 mL vials and injection volume ranges are listed as 0.1 to 100 µL on the listed autosampler specifications. Temperature control for column compartments is specified down to 10 °C below ambient and up to 80 °C for the thermostatted column compartments shown.

GC selection is driven by oven programming capability, retention-time precision, inlet and detector support, and heated-zone capacity. The 7890A and 7890B list oven operating ranges from ambient +4 °C to 450 °C and temperature setpoint resolution of 0.1 °C, with maximum programming of 20 ramps and 21 plateaus. The 7890B additionally documents up to two 105 m capillary columns and up to six independent heated zones (two inlets, two detectors, two auxiliary, excluding the oven). Retention-time repeatability is specified for the 7890 series at better than 0.0008 min (reported as < 0.0008 min / < 0.008%). The 6890N is also a laboratory GC option in the catalog, with an oven operating range to 450 °C and an oven setpoint resolution of 1 °C; it lists up to two inlets and two detectors.

Optical head selection hinges on wavelength coverage, detector material, active area, power measurement range and stated uncertainty. The catalog includes heads covering different wavelength bands and detector types: the 81623B spans 750–1800 nm (Ge or optional Si), the 81624A/81624B span 800–1700 nm (InGaAs), and the 81521B covers 900–1700 nm (cooled Ge PIN). Active-area diameters on the listed heads are 5 mm. For high-power optical transmitter testing consider the Agilent 81626B (Ge) with an optical power measurement range to +27 dBm and a maximum safe input of +28 dBm; lower-power InGaAs heads such as the 81624A/B list measurement ranges down to −90 dBm and maximum safe input power of +16 dBm. The 81533A is an interface module listed for use with the HP/Agilent 8153A mainframe and provides one optical-head input channel with an analog output and mainframe slot occupancy details in the module specification.