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DTS5400/5500 Zetasizer 4/4S Software version changes

Version and operating system	New features
Version 1.52
Windows NT 4.0 (service pack 6a) Windows 98SE Windows 98 Windows 95 B/C Windows 3.11 Windows 3.1	Mettler DL21 Macros added to standard release. Adobe Acrobat 16 bit PDF reader files for all available languages.
Version 1.51
Windows NT 4.0 Windows 98 Windows 95 Windows 3.11 Windows 3.1	Revision of sizing algorithms to reduce the need for advanced parameters. Default display changed to Raw Data.
Version 1.41
Windows NT 4.0 Windows 98 Windows 95 Windows 3.11 Windows 3.1	Delay in measurement sequence before reading pH Additions to Macro language. Allow plotting and logging of conductivity and pH values. Allow pH and conductivity to be set and read using macro language. Allow assignments of macros directly to buttons. Extension of picture macro command to allow plotting of userlog plots. Allow plotting of more than four angle against intensity scans.
Version 1.40
Windows NT 4.0 Windows 98 Windows 95 Windows 3.11 Windows 3.1	Support for Windows NT added. Include measurement duration in the measurement quality factor. The count rate displayed is now only that due to scattering from the sample. Incorporate FFR as an engineering function. Change the menu function "Reset Defaults" so that the custom correlator address is not reset. Append error messages to the error log text file during each session rather than overwrite existing file. Cumulants distribution changed to lognormal. Report the cumulants result with each sub-run. Experiment duration fixed at 3 seconds.