The AS-4050 is a 60 sample autosampler for use with conventional HPLC with options for analytical and semi-preparative injection volumes.

The AS-4050i is manufactured by using polyetheretherketone (PEEK) instead of metal parts which may become exposed to fluids. This allows analyses without concern about sample decomposition or absorption caused by metal.

The AS-4150 and AS-4250 are high-capacity, high performance autosamplers designed for RHPLC (up to 70 MPa) and UHPLC (up to 130 MPa), respectively, with a minimum injection cycle-time of only 30 seconds.

The AS-4058 is the LC-4000 Series largest volume autosampler with injection volumes up to 5 mL as standard (up to 10 mL as an option). The AS-4058 is typically used in combination with either a PU-4086, PU-4087 or PU-4088 pump for preparative separations.

Peltier cooling is available for all autosamplers and light protection for photo-labile samples is available on the higher level models.

Pre-injection sample preparation is available on the high performance autosamplers with programmable options for sample dilution and pre-column derivitization.

The injection mode can be switched between full loop injection and partial loop injections.

Up to 5 different washing solvents can be used to achieve excellent carry-over at less than 0.005 %.

An optional degasser can be installed for degassing up to 5 flushing solvents.

All LC-4000 series autosamplers share the same simple maintenance features, with consumable parts such as injection ports, rotor seals, and loops accessible from the front panel for easy replacement.