Operating Specifications*
|
|---|
| Sample Type |
Discrete Grab Sample from HPLC pumped through DOC detector. Detector operates in OL
turbo mode (taking a reading every 4 s) to capture all the data needed for each peak |
| Calibration |
DOC detector is calibrated with different concentrations of KHP. Molecular weight
standards, such as PEG or PSS, are used to calibration retention time to molecular weight |
| Analysis Time |
Depends on the pump and column, but typically 60-90 min for analyzing all molecular weights in a sample |
| Sample Temperature |
Depends on HPLC specification but for the detector 5-60°C (31-140°F) |
| Ambient Temperature |
5-40°C (41-104°F) |
| Instrument Sample Flow Rate |
HPLC pumps through Detector at 1mL/min |
Detector Specifications
|
|---|
| Analysis Method |
An inorganic carbon remover (ICR) removes IC from the sample. The resulting
non-purgeable organic carbon (NPOC) or total carbon (TC) value on the instrument is
obtained via UV persulfate oxidation and membrane conductivity detection |
| Outputs |
4-20 mA outputs* (3), alarm outputs (4), binary input (1), USB device port (1), USB host
ports (2); Modbus TCP/IP. *Value is in exporting the TC/NPOC value to the HPLC software |
| Display |
7" WVGA 800x480 pixel, Color LCD w/touch-screen |
| Power |
100 – 240 V~, 50 – 60 Hz, 100 VA |
| Dimensions |
H: 39.5 cm (15.4 in);
W: 22.9 cm (9.0 in);
D: 46.4 cm (18.3 in) |
| Weight |
9.4 kg (20.8 lb.) |
| Enclosure Rating |
IP-21 |
| Safety Certifications |
ETL CE |
Recommended System Setup
|
|---|
| HPLC Isocratic Pump |
At least a pump that can be run isocratically with no change in reagent gradient |
| SEC Column |
Recommended Tosoh Bioscience 44782 column |
| Injector |
Manual or autosampler |
| Vacuum Degasser |
To minimize interference from gases |
| UV Detector |
Multiple wavelength detector or diode array detector (DAD) |
| Universal Interface Box |
Analog to digital converter box for third party detectors |
| Sample Prep |
Filter to 0.45 μm and analyze DOC Detection to protect HPLC components |
| Chemistry |
Phosphate buffer (0.004 M, pH = 6.8) with 0.025 M sodium sulfate mobile phase (inorganic
in nature to avoid any organic contribution) |
| HPLC & HPLC Software |
To run system and collect data |
Recommended Detector Environment
|
|---|
| Maximum Relative Humidity |
0-95% non-condensing |
| Maximum Altitude |
3,000 m (9,800 ft.) |
| Pollution Degree |
2 |
