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世界*實(shí)驗(yàn)材料供應(yīng)商 Polysciences正式授權(quán)上海起發(fā)為其中國代理, Polysciences在一直是行業(yè)的*,一直為廣大科研客戶提供zui為的產(chǎn)品和服務(wù),上海起發(fā)一直秉承為中國科研客戶帶來的產(chǎn)品,的服務(wù),簽約 Polysciences就是為了給廣大科研客戶帶來更加完善的產(chǎn)品和服務(wù),您的滿意將是我們zui大的收獲
Polysciences中國代理, Polysciences上海代理, Polysciences北京代理,Polysciences廣東代理,Polysciences江蘇代理Polysciences湖北代理,Polysciences天津,Polysciences黑龍江代理,Polysciences內(nèi)蒙古代理,Polysciences吉林代理,Polysciences福建代理, Polysciences江蘇代理, Polysciences浙江代理,Polysciences四川代理,
美國POLYSCIENCES公司成立于1961年,主要生產(chǎn)和經(jīng)營LIFE SCIENCES生命科學(xué)(膠體金,不含甲醛的甲醇等),病理學(xué)和顯鏡學(xué) 微球和粒子和磁珠各種單體和聚體等產(chǎn)品。polysciences公司是世界上zui大zui全的多聚化合物供應(yīng)商,同時(shí)是世界*的免疫學(xué),組織化學(xué)試劑耗材供應(yīng)商.
Polysciences PEI MAX溶液配制說明書
——線性聚乙烯亞胺鹽酸鹽 #24765,1mg/ml轉(zhuǎn)染試劑的配制
轉(zhuǎn)染試劑線性PEI MAX溶液的配制
線性聚乙烯亞胺鹽酸鹽(Linear Polyethylenimine Hydrochloride)是線性化聚乙烯亞胺PEI 25,000的升級產(chǎn)品,是一種功能更為強(qiáng)大的瞬時(shí)轉(zhuǎn)染試劑。與PEI 25000的區(qū)別在于:1)*水解(去乙?;?)PEI 25000的鹽酸鹽形式,具更高的水溶特性 3)含更長連續(xù)性乙烯亞胺片段,其質(zhì)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轉(zhuǎn)染溶液通常需要幾個(gè)小時(shí)才能制備,而PEI MAX 40K可以在兩個(gè)小時(shí)內(nèi)轉(zhuǎn)化為即用型溶液。而且PEI 25K含有4-11%的殘余丙?;煞乐咕酆衔镏麈溑cDNA強(qiáng)烈結(jié)合。PEI MAX 40K*去乙酰化的結(jié)構(gòu)意味著每批產(chǎn)品的表現(xiàn)始終如一。
下面將主要介紹polysciences 線性PEI MAX(#24765)的產(chǎn)品特性及其溶液的配制過程。
產(chǎn)品名稱:轉(zhuǎn)染級線性聚乙烯亞胺鹽酸鹽(PEI MAX)(Linear Polyethylenimine Hydrochloride)
CAS號 | 49553-93-7 | 分子式 | (C2H5N)n ● xHCl | 分子量 | 40000 |
外觀 | 白色或灰白色自由流動(dòng)固體 | 儲(chǔ)存 | 室溫 | 結(jié)構(gòu)式 |
|
溶解性 | 溶于低溫和室溫水;不溶于常用有機(jī)溶劑(乙醇,丙酮,四氫呋喃) |
此指導(dǎo)說明書是經(jīng)polysciences公司研究,測試及其客戶反饋的后編寫的。下面推薦一種簡單適用而的方法,講述如何配制濃度為1mg/mL的轉(zhuǎn)染試劑的配制。
材料:
1g #24765、1L 純水(Milli-Q®純水,注射用水(WFI),或類似的生物級水)、1N氫氧化鈉、25mL無菌塑料吸管、一次性0.1µm, 0.2µm, 0.22µm PES真空無菌過濾器、無菌高聚乙烯或聚丙烯試劑瓶。
器材:
1 L 玻璃燒杯、1 L玻璃量筒、pH計(jì)、移液器、磁力攪拌棒、帶油管的真空泵
配制過程:
1g #24765——900mL水溶解——攪拌、加熱(60-80°C)——加1N NaOH調(diào)pH到6.9-7.1——移液到量筒,加水補(bǔ)足至1L——真空過濾消毒——分裝,4°C保存。
備注:加熱或加酸都有助于PEI溶解。#24765比#23966易溶,可適當(dāng)少量加酸,詳細(xì)用量可試加一點(diǎn)攪拌看看,足夠溶解就行,不一定需要加到pH那么低。
轉(zhuǎn)染液貯存和保存期:
在合適的容器中,轉(zhuǎn)染溶液在4°C可保持其性能至少6個(gè)月;對于定性工作,此溶液可能適用一年。
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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5:良好的信譽(yù),大部分客戶我們提供貨到付款服務(wù),客戶包括清華,北大 交大 復(fù)旦,中山等100多所大學(xué),ROCHE,阿斯利康,國藥 ,fisher等500多家公司
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