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跨膜电阻仪 EVOM2
产品简介
跨膜电阻仪EVOM2是最新一代用于特异性完成组织培养研究中TEER测量的电阻仪,与第一代的EVOM相比具有操作更简单,使用更轻松的特点。EVOM2不仅可以定性地测量单层贴壁细胞的健康状态,而且也能定量地测量单层细胞的融合情况。
国产/进口:进口
产地/品牌:WPI
型        号:EVOM2
货        号:EVOM2
  • 产品详情
  • 产品参数
  • 产品用途



产品概况

跨膜电阻仪EVOM2是最新一代用于特异性完成组织培养研究中TEER测量的电阻仪,与第一代的EVOM相比具有操作更简单,使用更轻松的特点。EVOM2不仅可以定性地测量单层贴壁细胞的健康状态,而且也能定量地测量单层细胞的融合情况。
独特的EVOM2 电路设计和STX2电极的完美结合,让其可以监测单层细胞的融合状态,当与WPI 公司设计的单个小室结合使用时,它也可以用来完成更加精确的定量测量
或更低电阻的测量,如血脑屏障(BBB)内皮生长电阻测量。
工作原理
通过主机产生10 μA的恒定跨膜电流,同时以一定的频率反转电极的极性,从而电极和膜均无电荷累积,10 μA 的电流通过STX2 的两个电流电极(I1和I2)跨过细胞膜,另一对电极(V1和V2)测量达到10 μA电流所需要的电压,并将信息发送给处理器。处理器根据欧姆定律将其转化为欧姆,在读数表上显示数字。因为电流是固定的10 μA,因此很容易转化出测量结果。如在膜电阻为1000 Ω时,10 μA电流通过的电压应是10 mV;
在膜电阻为200 Ω时,10 μA的电流将产生2 mV的电压;不论何种情况,在膜或电极上消耗的能量都非常少。
产品参数
EVOM2参数
膜电压测量范围 ±200 mV
电压测量精度 0.1  mV
电阻测量范围 0-9,999  Ω
电阻测量分辨率 1  Ω
交流方波电流 12.5 Hz 时额定±10 μA
内置充电电池 6V可充电镍氢电池
BNC 模拟输出 1-10 V ( 1  mV / Ω  )
外部供电 12 V直流
额定电池运行时间 10 小时
尺寸 19cm x11cm x 6 cm
重量 1.4 kg
电极连接 RJ-11 连接头
测试电阻 外部的
使用环境 10-38 ℃
0-90%非凝结相对湿度
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产品用途
■ 研究血脑屏障内皮细胞的药物和营养物质转运
■ CaCo-2大肠癌细胞或其它粘膜或上皮癌细胞的药效学研究
■ 培养的肠道粘膜细胞的药物吸收和营养物质转运研究
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