Search Results
-
Beckman pH meter in a glass case
- 1980s
A Polaroid photograph of what seems to be a Model G pH meter in a clear glass case as part of an exhibit or display.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…
-
Just Captured: The World of Ultracentrifugation With the SpinPro Expert System
- 1980s
The SpinPro Expert system software designed ultracentrifuge procedures based on users' answers to a series of questions, intentionally mirroring the telephone conversations that users used to have with Beckman…