Brookfield DV3T 流变仪

层析仪全自动离子色谱仪

利用离子交换的原理，采用Dow Chemical公司专利的高效率离子交换树脂，配合可泵送定流量溶媒(eluent)之泵浦，高灵敏度之电导计，记录器等，分析程序是(如图)，由泵浦泵送定流量溶媒，并将由注入口注入之被检体，推送入分离管(Separation column)，在管中各离子经过树脂交换而分离，然後依次再被推送入抑制管(Suppressor Column)，此时溶媒之离子都被抑制管吸附，不会影响电导计之检出，而只有所欲分析的离子被冲洗出来，进入电导计中，由其进入的顺序及时间(Retention time)来定性，由电导度之大小来定量，这些都以尖峰(peaks)的型态，出现在记录器上。在抑制管中，反应方程式如下

WaveQuest Scanning Specification

Wavelength Range 190-700nm Optical Bandwidth 4nm – constant Digital Resolution 1nm Wavelength Accuracy 1nm Wavelength Reproducibility ± 0.1nm Absorbance Range 0.001 to 3A Scan Speeds Up to 1000nm/s – UV scan in 200ms Baseline Flatness ± 0.002A over most of range Second Order Filter Fast automatic insertion at 370nm Noise < ± 0.5 x 10–5 A, 230nm, 2 s T/C, using air test cell Drift < ±0.3 x 10–4 A/h, 230nm, at equilibrium using air test cell Overlayed Scans Up to 8 scans may be overlayed Scan Trigger Start of peak, set Abs value, point of inflection or at peak Number of Peak Scans Up to 100 peaks for a single elution Scan Storage Up to 100 scans password protected Multiple Scans of a Peak Up to 8 scans of any peak Used with DataStream Data to PC, PC control, scan triggering, Lambda max. Software scans, peak purity and purity calculation, graphical presentation, overlay, normalisation, disk storage, library store and search, export, and many other functions.

IonQuest Precision Temperature

The eluent background conductivity changes by about 2% for a 1&ordm;C change in temperature. The cell temperature controlled enclosure temperature may be set by the operator to avoid ambient changes causing drift. The default value is set at 35&ordm;C and controlled to better than ±0.01&ordm;C. Temperature compensation is not therefore required.