
Overview
Prepacked Spin Column Selection Guide | |||||
Bio-Spin 6 | Micro Bio-Spin 6 | Bio-Spin 30 | Micro Bio-Spin 30 | PCR Kleen | |
Packed support | Special grade Bio-Gel P-6 gel | Special grade Bio-Gel P-6 gel | Special grade Bio-Gel P-30 gel | Special grade Bio-Gel P-30 gel | Special grade size exclusion gel |
Equilibration buffer | 10 mM Tris, pH 7.4 or SSC buffer* | 10 mM Tris, pH 7.4 or SSC buffer* | 10 mM Tris, pH 7.4 or SSC buffer* | 10 mM Tris, pH 7.4 or SSC buffer* | 10 mM Tris, 1 mM EDTA, pH 7.0 |
Applications Desalting of oligonudeotides >20 bases | • | • | — | — | — |
Labeling reactions: removal of unincorporated nucleotides >20 bases or bp from DNA | — | — | • | • | — |
Removal of primers and primer-dimers from PCR products >200 bp | — | — | — | — | • |
Buffer exchange (restriction fragments, PCR products, enzyme reactions, sequencing templates) | • | • | — | • | — |
DNA sequencing reaction mixture cleanup** | — | — | • | • | — |
Riboprobe cleanup*** | — | — | — | • | — |
Desalting of antibody, enzyme, and protein solutions | • | • | — | • | — |
Purification of proteins of molecular weight >6, 000 | • | • | — | — | — |
Purification of proteins of molecular weight >40,000 | — | — | • | • | — |
Bed volume | 1.1 ml | 0.7 ml | 1.1 ml | 0.7 ml | 0.6 ml |
Retention and recovery | 90% recovery of 20 bases or bp, 99% retention of salts | 90% recovery of 20 bases or bp, 99% retention of salts | 95% recovery of 22 bases or bp, 98% retention of ddNTPs | 95% recovery of 22 bases or bp, 98% retention of ddNTPs | 85% recovery of ≥700 bp, 95% retention of primers and primer-dimers |
Molecular weight exclusion limit, globular proteins | 6,000 | 6,000 | 40,000 | 40,000 | 8,000,000 |
Sample volume | 50–100 µl | 10–75 µl | 50–100 µl | 10–75 µl | 25–100 µl |
Centrifuge type | Swinging bucket | Microcentrifuge | Swinging bucket | Microcentrifuge | Microcentrifuge |
Autoclavability | Yes | Yes | Yes | Yes | Yes |
* 150 mM NaCl, 17.5 mM sodium citrate, pH 7.0.
** In Tris buffer.
*** In RNase-free Tris buffer.

Effective, rapid removal of primer-dimers from PCR reactions. Two PCR reaction mixtures were purified with PCR Kleen spin columns. Lane 1, a mixture of 2 µg of a 660 bp DNA fragment with 100 ng of a 25-mer primer-dimer; lane 3, a mixture of 2 µg of a 660 bp DNA fragment with 500 ng of a 25-mer primer; lane 2, primer-dimer purification; lane 4, primer purification; M, DNA markers. Reaction products and purified samples (10 µl each) were analyzed on a 1.5% agarose gel.
The PCR Kleen Spin Purification module uses size exclusion chromatography to remove unincorporated primers, nucleotides, salts, and enzymes from PCR products.
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