Second hand Waters 2695 liquid chromatograph:

Comes with attachments:
Column temperature box, online vacuum degassing machine, Empower 3 software, 2998 diode array detector/2414 differential refractive index detector/2475 fluorescence detector 200-900nm

Main functions:
Alliance 695 can perform qualitative and quantitative analysis of organic compounds, especially those with high boiling points and poor thermal stability. It has the characteristics of high separation efficiency, high detection sensitivity, high selectivity, and fast analysis speed.
Differential refractive index detector is a universal detector with a wide range of applications. It can detect substances without UV absorption, such as polymer compounds, sugars, fatty hydrocarbons, etc. It is also suitable for systems with large UV absorption background in the mobile phase that are not suitable for UV absorption detection. It is also essential in gel chromatography, especially for the determination of polymer molecular weight distribution.
Fluorescence detectors have high selectivity and only respond to fluorescent substances; The sensitivity is also high, with a low detection limit of 10-12g/ml, suitable for trace analysis of many bioactive substances, polycyclic aromatic hydrocarbons, and other natural fluorescent substances. It can also be used to detect substances that do not emit fluorescence but can emit fluorescence after chemical reactions.
The diode matrix detector can scan in the ultraviolet region and obtain three-dimensional spectra of time, light intensity, and wavelength. It can perform qualitative analysis such as spectral scanning and peak purity identification on chromatographic peaks. In method research, it can quickly select the best detection wavelength for qualitative and quantitative analysis of organic compounds, especially for compounds with high boiling points and poor thermal stability. It has the characteristics of high separation efficiency, high detection sensitivity, high selectivity, and fast analysis speed.

Used Waters 2695 liquid chromatographWidely used in fields such as chemistry, chemical engineering, polymers, biology, and food. Qualitative and quantitative analysis can be performed on various organic mixtures, such as proteins, amino acids, peptides, enzymes, sugars, fatty acids, alkaloids, polycyclic aromatic compounds, components in vitamins, as well as trace organic compounds in water.

Used liquid chromatograph Waters 2695