Malvern FAQ -- KB000012 Q: Why do I get high backgrounds when changing between using oil and then water？ A: What may be happening is that the water and residual oil in the unit is forming an emulsion, you need to flush thoroughly with a dispersant that is miscible in both water and oil such as IPA. It is also recommended that the windows are removed and cleaned as the oil may have coated the surface. 马尔文常见问题解答——KB000012号 问：当我用完油后改用水做分散介质，背景为什么会变高？ 答：可能发生的情况是：水和仪器中残留的油形成乳浊液，你需要用诸如IPA这种能与水和油都能混溶的介质进行彻底冲刷。由于油可能涂附在测量窗的表面，所以建议你拆下测量窗并进行清洗。
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