关于氨基磺酸铟电镀液的另一个常见问题是，应该检测什么？需要定期检测的一项内容是镀液的 pH 值。将电镀液的 pH 值控制在一定范围内对所有电镀液都很重要。pH 值应在 1-3.5 之间，但最好在 1.5-2.0 之间。在这种情况下，必须将 pH 值保持在 4 以下。当 pH 值达到 4 时，氢氧化铟 In(OH)3（乳白色）将开始从溶液中析出。可以使用 pH 值监控器或 pH 值指示条检测 pH 值。在回收和处理熔池时，应加入 NaOH 或 KOH 将 pH 值升至 7，通过形成氢氧化铟来去除熔池中的铟，如前所述，氢氧化铟会析出。
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