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High BOD Blanks

After switching to the automated BOD analyzer, we noticed higher BOD blank depletion values. When we switched back to analyzing samples manually, the BOD blanks values are lower. Has anybody else experienced these issues?

Beckman J2 21

Where can I get schematic diagrams of the centrifuge j2 21?

AA400 absorbancy

AA400 absorbancy drops in half while running tests...all elements.  What shall I check for first?  I check lamp energy - ok I cleaned nebulizer and spray chamber - no change Adjusted head while in continuous graphics ...

Low Battery

It says, 'Low Battery'. Should I purchase new batteries? If so, where could I get them?

System Check

During system check, oxygen flow sensor failed. What would cause this?


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