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Can you use Fresh Extender in your Spectrophotometer?

Like anything, if sodium citrate or extender get old it does not work as well.

 

We are probably talking about two weeks maximum for keeping a solution of sodium citrate in a bottle, after that there could be a problem with crystallization. Sure you can use fresh extender as well, as long as it contains sodium citrate (sodium citrate is a clarifying agent) and you zero out the spec to that reagent. To keep a fresh sodium citrate solution you can make it up in small batch sizes, for example 500 ml.

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Novel device for male infertility screening with single-ball lens microscope and smartphone. Novel device for male infertility screening with single-ball lens microscope and smartphone.

Worldwide reports suggest that infertility affects 15%– 20% of couples of reproductive age, and approximately 50% of these are accountable to the male partner. Although men with infertility represent a significant percentage of the infertile population, public awareness of this fact is limited at best. Literature and the other media have often neglected the male component of reproducti...

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