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PolysciencesPEIMAX溶液配制说明书

时间:2017-11-30      阅读:9652

世界*实验材料供应商 Polysciences正式授权上海起发为其中国代理, Polysciences在一直是行业的*,一直为广大科研客户提供zui为的产品和服务,上海起发一直秉承为中国科研客户带来的产品,的服务,签约 Polysciences就是为了给广大科研客户带来更加完善的产品和服务,您的满意将是我们zui大的收获

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美国POLYSCIENCES公司成立于1961年,主要生产和经营LIFE SCIENCES生命科学(胶体金,不含甲醛的甲醇等),病理学和显镜学 微球和粒子和磁珠各种单体和聚体等产品。polysciences公司是世界上zui大zui全的多聚化合物供应商,同时是世界*的免疫学,组织化学试剂耗材供应商.

 

Polysciences PEI MAX溶液配制说明书

——线性聚乙烯亚胺盐酸盐 #24765,1mg/ml转染试剂的配制

转染试剂线性PEI MAX溶液的配制

线性聚乙烯亚胺盐酸盐(Linear Polyethylenimine Hydrochloride)是线性化聚乙烯亚胺PEI 25,000的升级产品,是一种功能更为强大的瞬时转染试剂。与PEI 25000的区别在于:1)*水解(去乙酰化)2)PEI 25000的盐酸盐形式,具更高的水溶特性 3)含更长连续性乙烯亚胺片段,其质子化氮水平比PEI25000提高11%以上。

另PEI MAX 40K比PEI 25K更易于使用,并且更。PEI 25K转染溶液通常需要几个小时才能制备,而PEI MAX 40K可以在两个小时内转化为即用型溶液。而且PEI 25K含有4-11%的残余丙酰基,可防止聚合物主链与DNA强烈结合。PEI MAX 40K*去乙酰化的结构意味着每批产品的表现始终如一。

下面将主要介绍polysciences 线性PEI MAX(#24765)的产品特性及其溶液的配制过程。

  • 产品特性:

产品名称:转染级线性聚乙烯亚胺盐酸盐(PEI MAX)(Linear Polyethylenimine Hydrochloride)

CAS号

 49553-93-7

分子式

(C2H5N)n ● xHCl

分子量

40000

外观

白色灰白色自由流动固体

储存

室温

结构式

 

溶解性

溶于低温和室温水不溶于常用有机溶剂(乙醇,丙酮,四氢呋喃)

  • 溶液配制

此指导说明书是经polysciences公司研究,测试及其客户反馈的后编写的。下面推荐一种简单适用而的方法,讲述如何配制浓度为1mg/mL的转染试剂的配制。

材料:

1g #24765、1L 纯水(Milli-Q®纯水,注射用水(WFI),或类似的生物级水)、1N氢氧化钠、25mL无菌塑料吸管、一次性0.1µm, 0.2µm, 0.22µm PES真空无菌过滤器、无菌高聚乙烯或聚丙烯试剂瓶。

器材:

1 L 玻璃烧杯、1 L玻璃量筒、pH计、移液器、磁力搅拌棒、带油管的真空泵

配制过程:

1g #24765——900mL水溶解——搅拌、加热(60-80°C)——加1N NaOH调pH到6.9-7.1——移液到量筒,加水补足至1L——真空过滤消毒——分装,4°C保存。

备注:加热或加酸都有助于PEI溶解。#24765比#23966易溶,可适当少量加酸,详细用量可试加一点搅拌看看,足够溶解就行,不一定需要加到pH那么低。

转染液贮存和保存期:

在合适的容器中,转染溶液在4°C可保持其性能至少6个月;对于定性工作,此溶液可能适用一年。

 

Catalog# 24765 – Polyethylenimine HCl MAX, MW 40000, Transfection Grade

Transfection Reagent Preparation (1 mg/mL)

Materials:

1. 1g PEI MAX 40K (Polysciences Catalog# 24765).

2. 1L Milli-Q® water, water for injection (WFI), or comparable biological-grade water

3. 1N Sodium Hydroxide, USP

4. Sterile 25 mL plastic pipette

5. 0.1µm, 0.2µm, or 0.22µm PES vacuum sterile-filter.

6. Sterile HDPE or polypropylene storage vials

Equipment

1. 1L glass beaker

2. PTFE-coated stir bar 

3. Magntic stir

4. 1L glass graduated cylinder

5. pH meter

6. Pipette controller

7. Vacuum pump with tubing

Method:

1. In 1L glass beaker, suspend 1g of PEI MAX 40K in 900 mL water.

2. Add PTFE - coated stir bar to 1L glass beaker and set stirring to produce a small vortex.

3. Wait for PEI MAX 40K to compley dissolve. This typically takes less than 5 minutes.

4. Use 25mL palstic pipette t add 1N sodium hydroxide dropwise to 1L glass beaker until pH is 6.90 to 7.10.

5. If pH accidently exceeds 7.10, use 1N hydrochloric acid and a new 25mL plastic pipette to lower pH back to 6.90 to 7.10.

6. Decant solution from 1L glass beaker to 1L graduated cylinder.

7. Add water to 1L graduated cylinder to adjust final volume to 1L

8. Sterile-filter solution through vacuum membrane.

9. Aliquot solution as desired.

10. Store aliquots at 4°C.

Transfection Solution Storage and Shelf Life

At 4°C in a suitable container, the transfection solution will retain its maximum performance for at least six months. For qualitative work, the solution may be suitable for use for up to 1 year.

Support

We’re here to help! Our technical staff can troubleshoot most common and not-so-common issues you

may have. Send us an at info@polysciences.com and we will get back to you, typically within one

business day.

Pre-made Solutions

We offer pre-made solutions of PEI MAX 40K as our Transporter 5TM Transfection Reagent(Catalog#26008). Transport 5TM is 0.1µm sterile-filtered, fully qualified for transfection, and continuously retested to ensure reliably high protein yields.

 

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4:价格公道,绝大部分价格有优势,当然不能保证100%产品都是,因为意味着没有服务.

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7:我们还是invitrogen,qiagen,Midland BioProducts Corporationam,sigma;neb,roche,merck, rnd,BD, GE,pierce,BioLegend等知名*批发,欢迎合作。

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