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- *** THE REAL BUFFER ***
-
- by Dr. R÷bbe Wⁿnschiers; rw@biowasserstoff.de ; version 2.1
-
- intened for use with the Psion Revo, 5, 5mx and Mako
-
-
- *** Introduction ***
- Buffers are intensively used in Chemistry, Biochemistry and molecular biology
- to maintain a preset pH value in a aqueous solution. Yet, the buffer
- properties are influenced by not only by the buffer substance but as well
- by the temperature, the ionic strength of the solution and other parameters.
- THE REAL BUFFER takes this into consideration and calculates the amount of
- buffer substance to use and how to titrate. It uses a database containing
- the most common buffer substances used, and which can be altered by the user.
-
-
- *** Installation ***
- Before you install TheRealBuffer please uninstall any previous version!!!
- The programs zip file containing the file you just read (readme.txt; needs
- not to be on the Psion) and a sis archive. You can install TheRealBuffer
- via the PC-connection (PsiWin) or directly from the Psion. The program icon
- should then appear in the extras menu.
- If your Psion uses a comma ',' to separate decimals as in 3,14 then you have
- to switch your decimal separator to a dot instead. You do that by entering
- the system screen and choose international settings/numbers.
-
-
- *** How to use ***
- The program is still damn simple. You will first be asked if you like to get
- a list of buffer names of pKa's. The latter should be your choice if you like
- to have a specific pH since the program only allows pH's +/- 1 pKa.
- In the next screen you enter buffer parameters as volume, concentration, pH,
- temperature you make the buffer at, temperature you use the buffer at, and
- you choose the buffer or pKa (according to your previous selection).
- In the following window you will be asked if you like to set a ionic strength
- and, if so, with which salt.
- Finally you get the desired results... The thermodynamic pKa corresponds to
- the value ignoring temperature and ionic strength effects, whereas the
- apparent pKa reflects the changes due to those effects.
-
-
- *** Note ***
- I would very much like to release a big lab package. That has basically two
- implications for you. First, you might find updates with more features, and
- second you are asked to join the project! Contact me and visit my web page.
-
- I like to thank Ching-Chang Chen from Taiwan for the suggestion to adapt
- TheRealBuffer for Psion Revo users and testing version 2.0 r.
-
-
- *** Terms of usage ***
- Feel free to use and distribute the program when you agree to:
-
- *****************************************************************************
- ** not to sell it * tell me about your changes in the database **
- ** keep the package together * tell me were you place it for download **
- *****************************************************************************
-
- I would be glad to receive new database entries. Your name will be mentioned!
- Ask me if you like to receive the source code.
-
- Any comments are welcome! I do not take any responsibility for the results of
- using the program, neither physically, nor mentally (just imagine you perform
- the 10.000$ experiment and it fails do to the buffer - in the end it might
- turn out that you read Fahrenheit instead of Celsius - that's your baby).
-
- New versions or data can be found at http://members.tripod.de/roebbe/
-