MAXC DOWNLOADS

References    ESSENTIAL UNDERSTANDINGS    CONSTANTS   DISCLAIMER  

NOTE: archives may contains files not listed under individual files.

 
no longer supported
 
currently supported
 

PLEASE add either of these URLs to your papers:

http://www.stanford.edu/~cpatton/maxc.html
http://maxchelator.stanford.edu
MAXC PROGRAMS
Individual Files
Archives

winmaxc.zip

v2.45
Donald Bers' Spreadsheets
Work in Excel &
Quatro Pro

dmbsprd.zip

see 'also' reference

Files of constants above may just open in the browser.
Simply do a "save as" using the same name and they work fine. Individual files may be gotten at files or webmaxc
[contains files that are no longer considered valid. Use with caution]
WEBMAXC PROGRAMS
WEBMAXC - Standard Constants
WEBMAXC - Extended Constants
WEBMAXCLITE - just EGTA, ATP, Ca, Mg
WEBBUFCALC - Good buffer [ion] contrib
 
MAC PROGRAMS
bc1.zip.hqx - buffercalc for MacOS 7-9
 
NON-MAXC PROGRAMS
chelator [DOS]
bad.exe [DOS]
Link to SLControl for Data acquisition and analysis for muscle physiology by K. Campbell
CaBuf by Guy Droogmans. [Windows]

Latest Reference to the MAXC programs is:

Patton, Thompson and Epel.
"Some precautions in using chelators to buffer metals in biological solutions."
Cell Calcium. 35/5 pp. 427-431, 2004.
   

FAQ: Why do different programs give different results to the same calculation?

Answer: Every programmer has to make assumptions about how all of this works and what are the "best" constants to use [definitely no agreement on either issue]. No programmer starts out to make an invalid program. The results most likely do fit the observations made in their own lab. The problems come in when the programs are extended beyond experience into new situations [like yours]. A classic case of a person with two watches does not know what time it is.

Consider all of these programs to be a work in progress rather than a done deal. Therefore it is VERY important that you always report what program you used, including version information.

Disclaimer:

My degree, a B.A., is in Biology and Photography, NOT physical chemistry.[I was top of my class in Analytical Chemistry as an undergraduate, but that still does not qualify me as an expert.] I work as a professional technician at Stanford University's Hopkins Marine Station [29+ years]   I have been working with these equations and ideas for over twenty five years. I became interesting in doing these programs when they were needed for my work with Professor David Epel, also a biologist. I saw a need for an easier to use program than what was available at the time. By working with many experts in the field and a lot of cross checking and validation, the programs came to be.

However, I am not an expert. There are likely to be errors in understanding and possibly code execution. Mistakes have been found in the past. If anything, these programs are really a community effort. As people ask questions and answers are found they are incorporated into these pages and code.

I am willing to attempt to answer any questions you have, but if it is beyond my abilities I will readily admit so.

Chris Patton
cpatton@stanford.edu