Die cleaning
Hardware store is fine for general rinsing but tends not to be optical quality when preparing a sample for imaging. This is usually seen as streaks or small particles on the die.
DudaDiesel sells acetone that is sufficiently pure to clean dies for imaging (XXX: much better than hardware store but not clean enough. Rinse with distilled water)
Some problems during cleaning found traced to non-volatile residue. Question: what does it take to get acetone with very low non-volatile residue for cleaning? Alternatively, can I get another volatile compound, say IPA, that leaves less volatile residue?
| Source | Purity >= | Non-volatile residue ⇐ | CoA | $/L | Notes |
|---|---|---|---|---|---|
| Sigma Aldrich: CHROMASOLV®, for HPLC, ≥99.9% | 99.9 | 0.0002% (2 ppm) | N | 36.25 (4L) | |
| Sigma Aldrich: semiconductor grade VLSI PURANAL™ (Honeywell 17617) | N/A | N/A | On request | ||
| VWR: Acetone, Semiconductor Grade, 99.5% | 99.5 | 5 ppm | N | 17.93 (4L) | |
| VWR: Acetone High Purity | 99.8 | 3.0mg/L max | Y | 138.30 (1L) | |
| Polysciences: Acetone, Glass Distilled, 99.7% | 99.7 | N/A | N | ||
| Polysciences: Acetone, 99.5% - EM grade | 99.5 | N/A | N | ||
| OmniSolv® Acetone | 99.5 | 1 ppm | N | ||
| HPLC Acetone 1 L | 99.9 | 3 ppm | 58.00 (1L) | ||
| EMD Millipore AX0118-2 Acetone, High Purity, Lab Grade, 1L Glass Bottle | |||||
| DudaDiesel Acetone | 99.5 | 0.001 g/100 mL | Y | 8.50 (1L) | |
| KMG: Acetone Cleanroom LP | 1 ppm | Y | |||
| Acetone Production Grade VWR-BDH (A)06080903 | 99.97 | 0.001% (10 ppm) | Y | ||
| HPLC Grade ACS, Spectrophotometric Grade ACS, Reagent Grade ACS | 99.97 | 5 ppm | |||
| Pharmco Acetone, 99.5% ACS Reagent Grade, 16oz (Science Company) | 99.5 | 0.001% (10 ppm) |