JASCO｜Autosampler║AS-4250
Feature :
- Sample Protection
Peltier control is available for maintaining sample temperature and light protection is available on the higher level models for photo-labile samples.
- Sample Derivatization and Dilution
Sample preparation is available on the RHPLC and UHPLC autosamplers with programmable sample dilution and pre-column derivitization.
- Injection Modes
The injection mode can be switched between full loop and partial loop injections.
- Low Carry-Over
An optional 5 solvent flushing system can be added to virtually eliminate carry-over. An optional degasser can be installed for degassing up to 5 flushing solvents.
- Maintenance
HPLC 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.
|
Model |
AS-4250 (UHPLC) |
|
Sample injection method |
Full Fill Loop Injection Method, Partially Fill Loop Injection Method (can inject without any sample loss) |
|
Injection volume |
0.1 to 100.0 µL (0.1 µL increments) (Sample loop replacement is required.) 1 to 1000 µL (1 µL increments) (Optional large volume injection kit is required.) |
|
Sample loop |
5 µL (standard) |
|
Number of samples |
180 (standard, 2.0 mL vials) |
|
Reproducibility |
0.25 % RSD or less (under specified conditions) |
|
Injection accuracy |
±0.1 % or less (can compensate the injection volume by the setting) |
|
Carryover |
0.01 % or less (under specified conditions) |
|
Maximum usable pressure |
130 MPa |
|
Sample cooling and heating |
Option: (Room temperature - 21) °C or 4 °C (whichever is higher) to 40 °C |
|
Pre-column derivatization and dilution |
Pre-programmed injection sequence (Two reagent pre-column derivatization is possible) |
|
Dimensions, weight |
300 (W) × 470 (D) × 300 (H) mm, without Sample Temperature Control Unit: approx. 25 kg with Sample Temperature Control Unit: approx. 34 kg |
|
Required power |
AC 100 to 240 V, 50/60 Hz, without Sample Temperature Control Unit: maximum 75 VA with Sample Temperature Control Unit: maximum 350 VA |
