4. to remove petroleum ether evaporates na flat out and baked at a temperature of 100 ◦C until the solvent is evaporated, then left to cool in the jar, the moisture absorption scale weight.
4. Navarre ballast to take the petroleum ether evaporated off. Then baked at a temperature of 100 ◦C until the solvent to evaporate completely, then leave to cool in the bowl hygroscopic weighing.
4. NaF ballast to evaporate all petroleum ether, then baked at 100 cream C. Until the paint melt will evaporate and then leave to cool completely in the jar, moisture absorption weigh?