Table 2.
Hold times for samples above the liquid nitrogen surface and immersion times in liquid nitrogen.
| Hold Time | 0 s | 10 s | 20 s | 30 s | 240 s | |
|---|---|---|---|---|---|---|
| Immersion Time | ||||||
| 0 s | 240-0 | |||||
| 10 s | 0-10 | 10-10 | 20-10 | 30-10 | ||
| 20 s | 0-20 | 10-20 | 20-20 | 30-20 | ||
| 30 s | 0-30 | 10-30 | 20-30 | 30-30 | ||
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