LabDialysisChat - MWCO 1,000, 5,000, 10,000; methylene chloride

LabDialysisChat.com: The Answers for All of Your Laboratory Dialysis Questions.

Message

User

Date(yyyy-mm-dd)

MWCO 1,000, 5,000, 10,000; methylene chloride

Julan Zhao

2001-03-21

Click here to register.

What knid of dialysis membrane matches my sample?

My sample is a mixture of monomer and polymer which the molecular weight arranged from 100,000 to 500, solved in methylene chloride. I am going to cut the molecular weight of 5000 and 1000. Could you help me to choose a dialysis membrane? Thank you!

	Re: MWCO 1,000, 5,000, 10,000; methylene chloride

weenie tot

2001-03-22

Click here to register.

Because of the methylene chloride solvent, you'll probably have difficulty using a regular cellulosic membrane. You'll probably need something made of pvdf (polyvinylidene fluoride) or PES (polyethersulfone).

I don't know of a PVDF membrane with the small pore sizes you are looking for.

For laboratory use, the only PES membranes seem to be for ultrafiltration so they would only dialyze very slowly, but you may try one of them. (See, for example, http://www.pall.com/catalogs/filterbook/filtron/default.asp).

Thanks for visiting.

To ask question or answer a question, you need to register here.
You can browse by clicking on a message subject to see the complete message.
If you have previously registered, you can log in below.

Message (click on a subject to view the messages)

Pretreatment? by taiga on 2001-05-24

Re: Pretreatment? by dave on 2001-05-24

Does RC membrane do the job? by tate on 2001-05-23

Re: Does RC membrane do the job? by dave on 2001-05-23

A question about the move of water? by taiga on 2001-05-17

Re: A question about the move of water? by dave on 2001-05-17

Difference between CE membrane tubing /ultrafiltration? by taiga on 2001-05-16

Re: Difference between CE membrane tubing /ultrafiltration? by dave on 2001-05-16

Articles by taiga on 2001-05-15
Choose of dialysis tubing by taiga on 2001-05-14

Re: Choose of dialysis tubing by dave on 2001-05-14

ions and RC membranes by Sue on 2001-05-07

Re: ions and RC membranes by dave on 2001-05-10

negative charge on CE membranes? by haitzer on 2001-04-27

Re: negative charge on CE membranes? by dave on 2001-05-01

Membrame by dsu on 2001-04-18

Re: Membrame by jpartee on 2001-04-19

Which dialyse membrane for my application? by bizet on 2001-04-17

Re: Which dialyse membrane for my application? by dave on 2001-04-18

MWCO 1,000, 5,000, 10,000; methylene chloride by Julan Zhao on 2001-03-21

Re: MWCO 1,000, 5,000, 10,000; methylene chloride by weenie tot on 2001-03-22

Membrane Selection? by moderator on 2001-03-11

Re: Membrane Selection? by moderator on 2001-03-11

Low protein binding membranes? by moderator on 2001-03-11

Re: Low protein binding membranes? by moderator on 2001-03-11

MWCO Selection? by moderator on 2001-03-11

Re: MWCO Selection? by moderator on 2001-03-11

MWCO rating? by moderator on 2001-03-11

Re: MWCO rating? by moderator on 2001-03-11

Showing Oldest Message

Newest	Newer
Click for newer messages

You must register before asking a question or providing an answer. You can click here to register. If you have already registered you can log in below. (If you check the Use Cookies box then your computer will remember your log in name.)
User Name:
Password:

Click here if you previously registered and remember your user name but not your password. Email us at ldc@lplc.com if you are having other problems.

All of the comments made are the property and responsibility of the person making them. They are not the responsibility of Spectrum.
Please direct all questions and comments to us at moderator@labdialysischat.com.
General information on Spectrum's laboratory filters and filtration products is available at http://www.spectrapor.com.
Need a fraction collector? See http://www.lplc.com.