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Deionized Water, Ultra-Pure Distilled Water, General Laboratory Use Ultra-Pure Water

Deionized Water, Ultra-Pure Distilled Water, General Laboratory Use Ultra-Pure Water

Normaler Preis $2.00
Normaler Preis $2.00 Verkaufspreis $2.00
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1. 去离子水(DI 水)

  • 特性:核心优势是 “去除离子”,成本低于蒸馏水,制备效率高(可连续产水),但对非离子杂质(如有机物、微生物)去除能力弱。
     纯度分级:普通 DI 水(电阻率 1-5 MΩ・cm)、高纯度 DI 水(18.2 MΩ・cm,接近理论纯水极限)。
  • 适用场景:
    • 实验室常规清洗(玻璃器皿、仪器设备);
    • 电子工业(如电路板清洗,避免离子导致短路);
    • 化妆品、食品加工(作为配料,减少离子对产品稳定性的影响);
    • 不涉及 “有机物 / 微生物干扰” 的化学实验(如滴定分析)。

2. 蒸馏水(Distilled Water)

  • 特性:通过 “汽化 - 冷凝” 分离杂质,能同时去除离子、大部分非挥发性有机物、微生物和颗粒物,但无法去除低沸点挥发性有机物(如甲醇、乙醇,会随水蒸气一同冷凝)。制备成本高、效率低(间歇式产水)。
  • 适用场景:
    • 对 “离子 + 微生物” 均有要求的实验(如配制微生物培养基、生化反应缓冲液);
    • 医疗领域(如医疗器械清洗、部分注射用水的前体水);
    • 精密仪器补水(如加湿器、实验室蒸汽发生器,避免水垢和微生物堵塞);
    • 替代去离子水,用于对有机物残留更敏感的场景。

3. 无酶水(Enzyme-Free Water)

  • 特性:以 “高纯度 DI 水或蒸馏水” 为基础,通过高温灭菌(如 121℃高压蒸汽)、过滤(0.22μm 滤膜)、紫外线照射等手段去除 “酶活性”,核心控制指标是 “无特定酶污染”(最常见的是 “无 RNase 水”,用于 RNA 实验)。其 “离子 / 有机物纯度” 依赖于基础纯水的质量。
  • 适用场景:
    • 分子生物学核心实验(如 RNA 提取、反转录 PCR、DNA 测序,避免酶降解核酸);
    • 蛋白质相关实验(如 Western Blot,避免蛋白酶破坏目标蛋白);
    • 所有需要 “排除酶活性干扰” 的精密生化实验(普通 DI 水 / 蒸馏水可能含微量酶,导致实验失败)。
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Deionized Water, Ultra-Pure Distilled Water, General Laboratory Use Ultra-Pure Water

Deionized Water, Ultra-Pure Distilled Water, General Laboratory Use Ultra-Pure Water

Normaler Preis $2.00
Normaler Preis $2.00 Verkaufspreis $2.00
SPARE 0% Ausverkauft

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