求翻译：2、 如长期使用结垢严重或因加化学试剂提纯（如高锰酸钾等）产生污染，可用20%HF浸泡处理。但时间不宜过长，视蒸馏器光亮为准，浸泡后以去离子水冲净，平衡纯化。是什么意思？

2, such as severe or long-term use because of the increase scale purification of chemical reagents (such as potassium permanganate, etc.), pollution, available 20% HF soaking. But the time not too long, depending on the distiller bright subject, after soaking in deionized water rinse, balance purifi

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Because 2nd, like the long-term use scaling serious or adds the chemical reagent depuration (for example potassium permanganate and so on) to have the pollution, available 20%HF immersion processing.But the time not suitable has grown, regards the distiller luminously for, after the immersion flushe

2, such as serious or long-term use of scaling by adding chemical reagents, purification (such as potassium permanganate) pollute, dipped in available 20%HF. But the time should not be too long, as still light shall prevail, immersion in deionized water for net, balancing, purification.

2, such as serious or long-term use of scaling by adding chemical reagents, purification (such as potassium permanganate) pollute, dipped in available 20%HF. But the time should not be too long, as still light shall prevail, immersion in deionized water for net, balancing, purification.