The ÄKTA purifier is a fully automated liquid chromatography system designed for method development and research applications. The Protein Production laboratories have two machines; an analytical ÄKTA purifier 10 and a preparative ÄKTA purifier 100.
The Table below summarises flow rates and operating pressures for each system and contains links to system descriptions and features:
|ÄKTA purifier 10
|ÄKTA purifier 100
||Direct Load |
The purifiers can be regarded as essentially the same for the majority of applications, however, there are some important changes in configuration between the two machines which allow more specialist functions to be performed.
The ÄKTA Purifier 100 at the Technology Facility has been upgraded from a standard system. The standard unit consists of two pumps (A & B) each with buffer selection valves, a mixer unit, in-line filter, injection valve, detectors, outlet selection valve and fraction collector.
Due to the nature of the pump and to maximize column lifetime it is essential that all buffers are filtered (0.2 µm) and de-gassed before use with the ÄKTA purifier. All facilities for buffer preparation may be found in the Protein Production laboratories if not already available. The purifier 10 is used at room temperature, however, the purifier 100 is housed in a cold cabinet giving this sytem the power to perform FPLC type applications at 4°C.
Suitable samples should be clarified prior to use with the system. This may be achieved by filtering (0.45 or 0.2 µm) or by centrifugation at 10,000 x g for 20 minutes. Sample loading onto the column is system dependent (see above) as well as volume dependent.
Important information about sample loops
The sample loops available range from 10 µl to 5 ml, however, the pressure rating of the loops varies with increasing size;
The ÄKTA purifiers are driven by a Windows 2000 software package called UNICORN and are fully networked with the Biology department. The user must first log onto the PC as either themselves or alternatively as Biology in 'workstation' only mode. Next, launch the UNICORN software and then log-on to the package using the supplied password (obtainable from Protein Production staff). The UNICORN software comprises four main areas, a method/results manager, a method editor, system control and an evaluation package. Method construction on the ÄKTA purifier could not be simpler, the system uses a Method Wizard to direct you through the process providing all the necessary options to create complex protocols. Providing you have a basis in either FPLC or HPLC, then we would expect a user to be comfortable with the systems following a half-day training session.
Finally, the Protein Production laboratories would not supply a purification system without the columns to go with it! We have a wide range of columns available and the experience to custom pack resins. For more information on the ÄKTA purifiers and their capabilities, the types of columns which are available or to book a training session on the machine, please contact Jared Cartwright or Mick Miller in the Protein Production laboratories.