BIO 101's RPM® Spin Midi Kit is designed to economically produce sufficient quantities of highly purified plasmid DNA for most uses - 50 to 150 µg - in less than one hour per twelve samples. The high quality DNA produced by this procedure is suitable for manual DNA sequencing, PCR, in vitro transcription, and various enzymatic manipulations.
Procedure: RPM® Spin Midi uses the same basic BIND - WASH - ELUTE protocol employed by the RPM® miniprep Kit, and thus requires no extraction with organic solvents, no alcohol precipitation steps, and no use of syringes, vacuum manifolds, or slow columns. The use of BIO 101's special Spin Modules eliminates the need to repeatedly pellet and resuspend during washes, saving additional time and effort, and ensuring that all traces of Matrix have been removed from the final elution. All purification steps are carried out in the microcentrifuge.
Available sizes include 25, 75, and 200 preps.
| Three plasmids isolated by RPM® Spin Midi | |
![]() | Top:
left to right Lane 1: pGBT9 (1/200th DNA sample) Lane 2: pBK-RSV (1/200th DNA sample) Lane 3: pBR322 (1/10th DNA sample) Lane 4: 1-Hind III marker Bottom: Restriction digest of the samples above with Hind III, Pst1, EcoR1. Complete digestion is observed in each case. |

| Cat. No. | Description | Size/Vol. | |
| 2005-200 | RPM® SPIN MIDI Kit | 25 Preps | |
| Kit Contents | |||
| 2005-201 | Pre-lysis Buffer | 6 ml | |
| 2005-202 | Alkaline Lysis Solution | 12 ml | |
| 2005-203 | Neutralizing Solution | 9 ml | |
| 2005-204 | GLASSMILK® SpinBuffer | 35 ml | |
| 2005-205 | Wash Solution Concentrate | 16 ml | |
| 2005-206 | Spin Filter with Tube | 25 | |
| 2005-207 | Catch Tube | 25 | |
| 2005-208 | Elution Solution | 15 ml | |
| 2005-400 | RPM® SPIN MIDI Kit | 75 Preps | |
| Kit Contents | |||
| 2005-401 | Pre-lysis Buffer | 18 ml | |
| 2005-402 | Alkaline Lysis Solution | 36 ml | |
| 2005-403 | Neutralizing Solution | 27 ml | |
| 2005-404 | GLASSMILK® SpinBuffer | 105 ml | |
| 2005-405 | Wash Solution Concentrate | 45 ml | |
| 2005-406 | Spin Filter with Tube | 75 | |
| 2005-407 | Catch Tube | 75 | |
| 2005-408 | Elution Solution | 45 ml | |
| 2005-600 | RPM® SPIN MIDI Kit | 200 Preps | |
| Kit Contents | |||
| 2005-601 | Pre-lysis Buffer | 45 ml | |
| 2005-602 | Alkaline Lysis Solution | 90 ml | |
| 2005-603 | Neutralizing Solution | 70 ml | |
| 2005-604 | GLASSMILK® SpinBuffer | 280 ml | |
| 2005-605 | Wash Solution Concentrate | 120 ml | |
| 2005-606 | Spin Filter with Tube | 200 | |
| 2005-607 | Catch Tube | 200 | |
| 2005-608 | Elution Solution | 120 ml | |