| As shown in Table 1, the refractory lithophiles and siderophiles constitute about 1 per cent by mass of the total condensable material in the solar nebula. |
| In addition, the low temperatures on the Moon's nightside and in permanently shaded polar craters provide cold traps for condensable gases. |
| If proper vacuum is not achieved at installation the refrigerant system will be contaminated with non condensable air and water vapor which can cause compressor failure. |
| The MZ 2C NT with gas ballast valve is optimally prepared for pumping easily condensable vapors. |
| Each of these options may change the mass that would be counted as condensable particulate matter. |
| Single stage rotary vane pumps are the best choice whenever high condensable vapor pumping capacity is needed or low ultimate pressure is not necessary. |
