MERCK EMD Sorbents for Preparative Chromatography- These superior quality, reproducible sorbents suit any performance requirements. Bulk density is 0.35g/mL for particle sizes less than 40µm and 0.5g/mL for particle sizes from 40-500µm. Extra pure silica gel (EM-7754-1, EM-7754-3) is acid washed and contains <0.0005% lead, <0.002% iron, <0.0005% copper, <0.0005% cadmium, <0.0005% zinc, <0.008% chloride, <0.0005% phosphate, <0.003% sulfate, and <0.004% nitrate. Geduran gel is an economical alternative to EM-9385 and EM-7734 silica gels. All aluminum oxides are activated. Activity (I-III) refers to Brockmann activity. Relative activity is directly related to the water content of the sorbent, most active at I and least active at III.
| Sorbent | Pore Size, Å | Particle Size, µm | pH | Size | Item No. | Price | | Sorbents for Preparative Column Chromatography (with <0.02% Fe and <0.02% Cl) | | Silica Gel | 40 | 63–200 | 5.5 ±0.5 | 1 kg | EM-10180-3 | $286.90 | | Silica Gel | 40 | 200–500 | 5.5 ±0.5 | 1 kg | EM-10181-3 | $286.90 | | Silica Gel | 60 | 40–63 | 7.0 ±0.5 | 1 kg | EM-9385-3 | $400.25 | | Silica Gel | 60 | 40–63 | 7.0 ±0.5 | 2.5 kg | EM-9385-4 | $681.98 | | Silica Gel | 60 | 40–63 | 7.0 ±0.5 | 5 kg | EM-9385-5 | $1,002.50 | | Silica Gel | 60 | 40–63 | 7.0 ±0.5 | 25 kg | EM-9385-9 | $3,156.19 | | Silica Gel | 60 | 63–200 | 7.0 ±0.5 | 1 kg | EM-7734-3 | $267.02 | | Silica Gel | 60 | 63–200 | 7.0 ±0.5 | 2.5 kg | EM-7734-4 | $563.38 | | Silica Gel | 60 | 63–200 | 7.0 ±0.5 | 25 kg | EM-7734-7 | $2,529.47 | | Silica Gel | 60 | 200–500 | 7.0 ±0.5 | 500 g | EM-7733-1 | $206.54 | | Silica Gel | 60 | 200–500 | 7.0 ±0.5 | 1 kg | EM-7733-3 | $286.92 | | Silica Gel | 60 | 200–500 | 7.0 ±0.5 | 5 kg | EM-7733-5 | $1,079.34 | | Silica Gel | 60 | 200–500 | 7.0 ±0.5 | 25 kg | EM-7733-9 | $2,781.15 | | Silica Gel, Chromatospec | 60 | 15–40 | 7.0 ±0.5 | 500 g | EM-15111-1 | $212.17 | | Silica Gel, Chromatospec | 60 | 15–40 | 7.0 ±0.5 | 1 kg | EM-15111-3 | $396.21 | | Silica Gel, Chromatospec | 60 | 15–40 | 7.0 ±0.5 | 25 kg | EM-15111-9 | $3,388.19 | | Silica Gel, Extra Pure | 60 | 63–200 | 6.5 ±0.5 | 500 g | EM-7754-1 | $324.99 | | Silica Gel, Extra Pure | 60 | 63–200 | 6.5 ±0.5 | 1 kg | EM-7754-3 | $584.86 | | Silica Gel | 100 | 63–200 | 6.5 | 5 kg | EM-10184-5 | $1,079.34 | | Silica Gel | 100 | 200–500 | 6.5 | 500 g | EM-10185-1 | $218.61 |
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