Your current column and the selected column, shown together.
4 of 8 scoring criteria are comparable, covering 58% of the total weight. Missing values are excluded.
The percentage includes partial similarity. Green means the recorded values match; red means they differ. The calculation below explains each contribution.
Similarity does not guarantee identical selectivity or performance. Confirm suitability for your method.
| Property | Current columnChromaNik Technologies Inc. SunShell C18-WPP/N CW6931 | Selected columnMerck Chromolith® HRP/N 152022 |
|---|---|---|
| Vendor | ChromaNik Technologies Inc.≠ Different | Merck≠ Different |
| Modification | Silica/C18✓ Match | Silica/C18✓ Match |
| Mode | Reversed-Phase✓ Match | Reversed-Phase✓ Match |
| Particle Size | 2.6≠ Different | Monolithic≠ Different |
| Length | 30≠ Different | 100≠ Different |
| Internal Diameter | 2.1≠ Different | 4.6≠ Different |
| Pore size | 160≠ Different | N/A≠ Different |
| Max Pressure | 8570≠ Different | 3000≠ Different |
| Surface Area | 90≠ Different | N/A≠ Different |
| Carbon Load, % | 5.0≠ Different | 18.0≠ Different |
| Endcapped | Yes✓ Match | Yes✓ Match |
| pH stability from | 1.5≠ Different | 2.0≠ Different |
| pH stability to | 10.0≠ Different | 7.5≠ Different |
| Brand | SunShell C18-WP≠ Different | Chromolith® HR≠ Different |
| Operating Temperature | Not recorded? Missing or unconfirmed | 45? Missing or unconfirmed |
| Product Usage | Acidic compounds, Basic compounds, Chelating compounds? Missing or unconfirmed | Not recorded? Missing or unconfirmed |
Each comparable criterion earns its weight multiplied by its similarity. The sum is divided by the available weight, then multiplied by 100 and rounded. Missing criteria earn no points and add no weight. Vendor, Brand, Mode, length, internal diameter, pressure and temperature do not contribute to this percentage. Mode and Modification determine which families appear in recommendations.
Scroll this table sideways to see both columns and their score contributions. You can also focus the table and use the arrow keys.
| Criterion and method | Current column | Selected column | Contribution |
|---|---|---|---|
| Modification Recorded values overlap. Proprietary modifications are capped at 50%; an identical label does not confirm identical chemistry. | Silica/C18 | Silica/C18 | 100.0% × 25 = 25.00 points |
| Product Usage Shared usage values divided by all distinct usage values recorded for these columns. | Acidic compounds, Basic compounds, Chelating compounds | Not recorded | Excluded, missing data |
| Carbon Load, % Numeric closeness, falling to zero at a 50% relative difference. | 5.0 | 18.0 | 0.0% × 15 = 0.00 points |
| Endcapping Recorded endcapping values overlap. | Yes | Yes | 100.0% × 10 = 10.00 points |
| Pore Size Numeric closeness, falling to zero at a 50% relative difference. | 160 | N/A | Excluded, missing data |
| Surface Area Numeric closeness, falling to zero at a 50% relative difference. | 90 | N/A | Excluded, missing data |
| pH Stability The overlapping pH range divided by the combined pH range. | 1.5 to 10.0 | 2.0 to 7.5 | 64.7% × 8 = 5.18 points |
| Particle Size Numeric closeness, falling to zero at a 20% relative difference. | 2.6 | Monolithic | Excluded, missing data |
40.18 ÷ 58 × 100 = 69% (rounded).
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