非接觸式電導(dǎo)檢測器
非接觸式電導(dǎo)檢測器（ccd）與普通的電導(dǎo)檢測器相比，有以下幾個優(yōu)點：
1.安裝非常簡單，不需要與毛細管口對準連接等復(fù)雜操作。
2.由于電極不與電泳緩沖液接觸，噪音小，檢測靈敏度*的提高。
3.也正因為電極不與電泳緩沖液接觸，在電泳過程中，電極不會有產(chǎn)生氣泡等問題。
檢測限：10-40ppb
池體積：<3 nl
溫度控制：18-42 ºc，1ºc遞增
精 度：±0.5 ºc
操作溫度：10-40 ºc
the tracedec contactless conductivity detector (ccd) is based on two metal electrodes, which are placed around the separation capillary, which can be of any non-conducting material (e.g. fused silica, peek, teflon). after an ac voltage is applied to the actuator electrode, the current passes the capillary wall, the detection gap between the electrodes inside the capillary, and back to the pick-up electrode. the signal is then further amplified and processed. this detector can be coupled to any prince system without using any tools.
some features of the tracedec contactless conductivity detector
- on-capillary detection
- simple operation conditions
lowest limits of detections for inorganic and small organic ions (ppb)
simple operation conditions
ccd offers a number of advantages over standard conductivity detection. it is very easy to set up, because the electrodes don"t need to be carefully aligned within the microscopic ce channels. secondly, because the electrodes aren"t in direct contact with the electrophoresis buffer, the background noise is greatly reduced, thereby increasing sensitivity. thirdly, the lack of direct contact between the electrodes and the buffer also prevents bubbles being cr-eated via electrolysis.
specifications ouctivity detector
specification | details |
detection limit | 10-40ppb with indirect injection |
cell volume | <3 nl |
cell temperature control | 18 to 42 ºc in 1ºc increments |
cell temperature accuracy | ±0.5 ºc |
operating temperature | 10-40 ºc |
line voltage | 90-132 vac, 184-264 vac, 50/60hz |
power consumption | 50va |
dimensions and weight detector | 250 x 105 x |
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