Further information:
QIAGEN Plasmid Purification
System
For ultrafast purification of up to 750 µg plasmid or cosmid DNA
| HiSpeed Plasmid Kit Options | |||
| Expected yield* | Column capacity | Culture volume† | |
| HiSpeed Plasmid Midi Kit | Up to 200 µg | 200 µg | 50 –150 ml |
| HiSpeed Plasmid Maxi Kit | Up to 750 µg | 750 µg | 150 –250 ml |
* Actual yields depend on plasmid copy
number, size of insert, host strain, culture medium, and culture volume.
† Culture volumes depend on plasmid copy number, size of insert, host
strain, and culture medium.
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QIAfilter Cartridges are special filter units designed to replace the centrifugation step following alkaline lysis of bacterial cells. QIAfilter Cartridges completely remove SDS precipitates and clear bacterial lysates in a fraction of the time needed for centrifugation. |
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HiSpeed Tips have an improved design which allows a very high flow rate, permitting DNA binding, washing, and elution steps for plasmid purification to proceed faster. In addition, the new anion-exchange resin contained in HiSpeed Tips has an increased capacity, allowing yields of up to 200 µg high-copy plasmid to be obtained from HiSpeed Midi Tips, and up to 750 µg high-copy plasmid to be obtained from HiSpeed Maxi Tips. |
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The unique QIAprecipitator module replaces the centrifugation step traditionally used to collect isopropanol-precipitated DNA following purification. The QIAprecipitator module traps the precipitated DNA while the isopropanol–buffer mixture flows through. The DNA is then simply eluted from the QIAprecipitator into a microcentrifuge tube with TE buffer or water. This unique module also eliminates the risk of pellet loss, which can occur during decanting of the supernatant following centrifugation. |
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Neutralized bacterial lysates are incubated in the QIAfilter Cartridge and cleared in seconds by filtration. The filtrate is applied to a HiSpeed Tip for plasmid DNA purification (see flowchart on page 200). Eluted DNA is mixed with isopropanol and applied to the QIAprecipitator module using the syringe provided. The concentrated and desalted DNA is then eluted from the QIAprecipitator directly into a microcentrifuge tube with TE buffer or water.
Ultrapure DNA purified with HiSpeed Plasmid Kits yields excellent results in all applications, from cloning and sequencing to transfection.
操作手册:HiSpeed Plasmid Purification Handbook 12/01 (PDF version, 209 KB)