01-as3950

Autosampler 3950, standard, 700 bar

Varenr. KNA50080

KNAUER Autosampler 3950 BASIC, LAN, standard, 700 bar incl. accessories

Beskrivelse

A50080
Standard version, 700 bar. The Autosampler 3950 can inject from up to 768 positions when equipped with microtiter plates (either high or low formats) or from up to 108 standard 2 ml sample vials. Sample carryover is significantly minimized thanks to a highly-effective interior and exterior needle wash procedure. This autosampler is also fast and flexible: one complete sample injection cycle takes less than one minute, including needle wash. Three different injection modes are supported, "full loop filling" (highest precision and reproducibility), "partial loop filling" (variable volumes, e.g. for dilution series) and "µl pickup" (loss-free injection of extremely small sample volumes), allowing the user to optimize sample usage. The headspace pressure function prevents bubbles from forming in the vial during sample uptake. Precolumn derivatization is supported.

For high-pressure injections of up to 700 bar, the autosampler is equipped with a so-called ILD valve (Intermediate Loop Decompression). This valve consists of a rotor-stator combination and includes a central port for depressurizing. For high pressure applications, the sample loop is depressurized prior to receiving the sample. This way, the sample is not diluted with solvent. Because the valve is switched extremely fast, pressure spikes are reduced. Analyses are more precise and wear of the column is reduced.

  • Max. plate/vial height: 47 mm (incl. septa or capmat)
  • Injection volume range: 0.1-5000 µl programmable
  • Sample loop: 10 µl standard
  • Dispenser syringe: 250 µl
  • Headspace pressure: built-in compressor, only for vials with septum
  • Switching time inj. valve: < 100 ms
  • Piercing needle precision: ± 0.6 mm
  • Sample tray cooling: none
  • Vial detection: missing vial/well plate detection by sensor
  • Needle wash:programmable: wash between injections and wash between vials
  • Wetted materials: stainless steel (SS316), Tefzel®, Vespel®, glass, Teflon® (PTFE).
  • Injection modes: full loop, partial loopfill and µl pickup mode, PASA (pressure-assisted sample aspiration)
  • Injection precision: RSD (Relative Standard Deviation): full loop injection: <0.3% partial loop injection at an injection volume>10 µl: <0.5% microliter pickup injection at an injection volume>10 µl: <1.0%
  • Injection volumes: full loop: max. 5000 µl /partial loop: max. 2500 µl (50% loop volume)/µl pickup: max. 2455 µl (50% loop volume - 1,5x needle volume) 0.1 µl increment for all injection modes
  • Sample carryover: < 0.05 % with programmable needle wash
  • Injections per vial: max. 9 injections
  • Injection cycle time: minimum 7 s from the same vial, 14 s from different vials, < 60 s for 100 µl sample injection in all injection modes, incl. 300 µl needle wash
  • Analysis time: max. 9 h, 59 min, 59 s
  • Inputs: 2 programmable TTL inputs (next injection, freeze, stop)
  • Outputs: 1 programmable relay output (inject marker, auxiliary, alarm)
  • Control: Ethernet (LAN)
  • Ambient conditions: temperature range: 4-40 °C, 39.2-104 °F, air humidity: below 90 % humidity (non condensing)
Specifikationer
Varenr. KNA50080
Antal / pk 1
Enhed stk
Min. bestilling 1
Leverandørens varenummer A50080
Type Basis | In situ temp.
Type 2 Udstyr
Model 3950
Positioner 768 | 96
Vægt 19
Kapacitet 96x2 ml, 768wells
Dimensioner 300 x 360 x 510 mm
Interface LAN
Power 90-230V
CE-godkendt ja