201-58 Where is the bubble observation window of fisher sub sieve sizer? What is its function?
The bubble observation window of fisher sub sieve sizer is located at the bottom left of the front of HMK-22 fisher sub sieve sizer. It is used to observe the situation of bubble ejection when fisher particle size analyzer is working.
Fisher Sub Sieve Sizer https://www.isizer.com/fisher-sub-sieve-sizer-principle/