Kevin Olsen

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Questions related from Kevin Olsen

Can you give me an example of a faulty or egregious environmental claim that is NOT related to climate change?

I am doing lesson plans and am looking for examples of environmental claims that do not stand up to close scrutiny. There are more than enough examples of this related to climate change...so no...

19 January 2021 4,849 7 View

Phosphate Analysis my solutions with ascorbic acid keep turning yellow, what can I do?

We use the tried and true ammonium molybdate / potassium antimonyl tartrate react in acid medium with reduction to an intensely colored molybdenum blue by ascorbic acid. The resulting solution...

05 November 2020 5,437 10 View

How can I get a reliable 10 ml adjustable volume pipette?

We have a regulatory obligation to have quarterly calibrations on all of our adjustable volume pipettes. The pipette must perform as well as Class "A" volumetric glassware. A 10 ml pipette must...

16 June 2020 8,213 2 View

Chill box, yes or no? Beckman PF2D ProteomeLab Protein Fractionation system?

We have the following Beckman system: Beckman Coulter PF2D ProteomeLab Protein Fractionation system Pf 2D – 116, pump Pf 2D – organizer Pf 2D – 116, detector These were donated to our university...

06 February 2019 710 1 View