Steritop™ 过滤装置
Steritop瓶顶过滤装置具有较大的过滤面积，可以快速、无菌地将水溶液过滤到瓶颈为窄口 (33 mm) 或宽口 (45 mm) 接收瓶中。
Steritop瓶顶过滤装置具有较大的过滤面积，可以快速、无菌地将水溶液过滤到瓶颈为窄口 (33 mm) 或宽口 (45 mm) 接收瓶中。漏斗里有一个小卡片在过滤过程中将选装的预过滤膜固定到位。为了更好地防止污染，瓶子接口上的螺纹稍微内凹，以防漏斗不小心接触到工作表面。
Steritop瓶顶过滤装置具有较大的过滤面积，可以快速、无菌地将水溶液过滤到瓶颈为窄口 (33 mm) 或宽口 (45 mm) 接收瓶中。漏斗里有一个小卡片在过滤过程中将选装的预过滤膜固定到位。为了更好地防止污染，瓶子接口上的螺纹稍微内凹，以防漏斗不小心接触到工作表面。 Less<<
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概述
规格
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Documentation
问与答
| 问题 | 回答 |
|---|---|
| Are Stericup and Steritop units autoclavable? | No. The highest temperature that the product can be used at is 50C ( 122F ). |
| Can I bubble point my Stericup/top? | No. The unit is not designed to handle the pressures required to perform a bubble point test. It is designed to be run under vacuum only (15 psi max). Bubble points for any of the membranes in the Stericups/tops need to be run at pressures ranging from 22 psi to 57psi. |
| Do you have a filter for 100% serum? | Yes, you can filter serum with Millipore Express membrane. The Express membrane was designed for this application and offers fast filtration time. Millipore Express is available in a large number of filter devices including Millex syringe filters, Stericup and Steritop vacuum devices, Sterivac for large volumes of media and Steriflip for 50 mls. |
| For tissue culture media filtration which membrane should I use? | The best membrane for this application is the Millipore Express membrane. It was designed specifically to filter tissue culture media with serum. It is low protein binding, has fast flow and high throughput (which is also called filter capacity). |
| I want to sterilize 100% ethanol. Are any of the Stericups or Steritops compatible with ethanol? | The funnel and receiver flask is made of polystyrene. Any molded polystyrene will craze in pure ethanol and could structurally fail depending on the forces being applied to it. The funnel could handle the short exposure time but the receiver would craze eventually. Therefore we would not recommend the Stericup with 100% ethanol. The Steritop, if you keep the exposure time to the funnel minimal, should be fine. As you dilute the alcohol the compatibility improves. Both Express and Durapore membranes are compatible. MCE is not. |
| I will be filtering tissue culture media with your Stericup/top and am concerned that wetting agents in the filter could effect my cells. Which membrane type would you recommend to avoid this? | All of Millipore's Tissue Culture Media filtration sterilization devices contain membranes that are wetting agent (surfactant ) free. |
| Is the Express membrane surfactant free? | Yes, the Express membrane is surfactant free. It also has a very low extractables specification - less then 1.5% by weight. |
| When I use my Stericup/top, sometimes some of my sterilized solution gets pulled into my vacuum line. How can I eliminate this from happening? | Attach your vacuum tubing and turn the vacuum on before adding the liquid to the Stericup/top. This eliminates any initial solution that flowed through the membrane before starting the vacuum from being pulled into the vacuum line. |
| What is the diameter of the membrane in the Stericup and Steritop units? | All of the cups and tops currently have a 70mm diameter membrane, which has 43 cm2 of surface area. |
| Why use a vacuum driven filter rather than a pressure driven filter? | Unlike positive pressure filtration, vacuum driven filtration requires only a vacuum source. It does not require pressure vessels or peristaltic tubing pumps. Stericup and Steritop units are pre-sterilized and disposable making setup and cleanup easy! |
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种类
| Life Science Research > Cell Culture and Systems > Sterile Filtration Devices |