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当前位置:首页 > 品牌资讯 >EpiShear™超声波破碎仪
Active motif公司提供的EpiShear™是一款含微处理器的探头式超声波破碎仪,即可程式化操作,也可以手动操作,是制备染色质或DNA片段用于ChIP、DNA甲基化研究以及二代测序的理想工具。EpiShear™也可用于常规的细胞破碎、RNA剪切以及其他的匀浆应用。
标配的EpiShear™ 探头式超声波破碎仪包含一个发生器,压电转换器,1/8"探头(可处理500ul-15ml样本),电源线,压电转换器线,扳手工具套装和产品使用手册。隔音箱、支架、其他型号探头等需要另外配置。


 
 
 



图1  EpiShear™ 探头式超声波破碎仪

 
 表1: EpiShear™超声波破碎仪的主要技术参数
 处理样本体积:
 200 µl - 50 ml
(根据探头的大小)
 (标配的1/8" 探头的处理体积为500 µl - 15 ml)
 可调振幅:
 20% - 100%
 可编程时间:
 1秒—10小时
 可调脉冲:
 1-59秒
 额定功率:
 120 瓦特
 输出频率:
 20000赫兹
 输入电压:
 100V - 120V @ 50/60 Hz 或
 220V - 240V @ 50/60 Hz
 发生器尺寸:
 13.75" 长 x 5.75" 高 x 8" 宽 (349 mm x 146 mm x 203 mm)
 7 磅(3.2 千克)
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EpiShear™有一个数控面板,方便操作者设置振幅、总超声时间以及超声的频率,而且容易监测及改变各种参数。同时在显示屏上可以实时显示操作时间、监测瓦特及焦耳能量。所有这些特点使得EpiShear在后续的超声处理中可获得更一致的结果。







图 2: EpiShear™超声破碎仪的显示屏和按键
 

EpiShear™超声破碎仪的特点
● 可程式化操作– 设置超声时间和频率进行自动化操作
● 脉冲形式– 可防止处理温度敏感样本时热量的积累
●  数控振幅/强度– 可调节20% - 100%的输出强度
● 显示进程时间 – Displays duration of sonication
● 显示瓦特和焦耳能量– 实时能量监测
●  过载保护 – 出现故障时可以防止电路的损坏
●  紧凑型设计– 实验室占用空间小







 图3 使用EpiShear 超声破碎仪制备的染色质片段凝胶电泳结果图

1%福尔马林固定HeLa细胞10分钟,使用ChIP-IT® Express Kit里的shearing buffers 制备染色质。取3份300ul的HeLa细胞,使用EpiShear 超声破碎仪和1/8"探头在25%振幅下分别进行5、10和20次脉冲。每次脉冲包括一次20秒的超声和一次30秒的冰上静置,防止热量的积累。染色质解交联后,用蛋白酶K和RNase A 处理,按照操作手册用酚/氯仿抽提并沉淀染色质。1%琼脂糖凝胶电泳分析制备的染色质,理想的染色质片段在200-1000bp的位置出现弥散的条带。
Lane 1: 100 to 1000 bp ladder.
Lane 2: HeLa DNA sheared for 5 pulses (理想的).
Lane 3: HeLa DNA sheared for 10 pulses (理想的).
Lane 4: HeLa DNA sheared for 20 pulses (过度剪切的)
*注:本次实验中5次和10次脉冲制备的DNA片段都适合于ChIP实验

产品信息
 供货商
 
 产品编号
 产品名称
 规格
 Active Motif
 53052
 EpiShear™ Probe Sonicator
 230V
 Active Motif
 53053
 EpiShear™ 1/8” (3.2 mm) Sonicator Probe
 1 probe
 Active Motif
 53056
 EpiShear™ 5/64” (2 mm) Sonicator Probe
 1 probe
 Active Motif
 53057
 EpiShear™ 1/4” (6.4 mm) Sonicator Probe
 1 probe
 Active Motif
 53054
 Support Stand / Converter Clamp
 1 unit
 Active Motif
 53058
 EpiShear™ Replacement Converter
 1 unit
 Active Motif
 53059
 Footswitch
 1 unit
 Active Motif
 53060
 Sound Enclosure, Large
 1 enclosure

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