Monthly Archives: September 2012

27 Sep


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Cryostorage containers make it possible to transport and store liquid nitrogen safely for extended periods of time.  I had recently been working with a lab outside of San Jose who specialize in the storage and transport of human cells.  This was … Continue reading

24 Sep

MWCO Membrane

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Ultrafiltration involves filtration at the molecular weight level. Ultrafiltration can involve membranes, centrifuge tubes, and dialysis tubing. MWCO membranes allow molecules smaller than the molecular weight cut off to pass through while molecules larger than the molecular weight cut off … Continue reading

21 Sep


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Recently there was an outbreak of the Hantavirus in Yosemite national park that has taken the life of three visitors and infected nine others.  The hantavirus is a negative sense RNA virus that is carried by rodents.  This disease does … Continue reading

20 Sep

Celestron Handheld Digital Microscope

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I chose the Celsetron 44302 Handheld Digital Microscope for this weeks blog as I have young niece who is interested in science, and thought this would be a great gift for the upcoming holiday’s.  Though it may not have high end precision optics, they’re not bad and … Continue reading

17 Sep

Membrane Filtration

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Membrane filters are surface or screen filters. In this type of filtration only the surface is used to filter the solution. Typical pore sizes range from 0.2um (micrometers) to 1.0 um. Membrane filters can be made of cellulose (cellulose acetate, … Continue reading

13 Sep

Unico Porta Spin Mobile Centrifuge

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The UNICO Porta Spin Mobile Centrifuge is the perfect answer for all of you traveling nurses out there.  I did a blog last week on a battery powered centrifuge by Seperation Technology, which does have a few more bells and whistles.  … Continue reading

10 Sep

Sterile Filtration

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For sterilization of temperature sensitive media, a sterile filtration device is used.  These devices have a sterilizing grade microporous membranes with a porosity of 0.1µm or 0.2µm.   Sterile bottle top filters and sterile receivers aid the researcher in preparing … Continue reading

07 Sep

Nikon Eclipse E200

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The Nikon Eclipse E200 compound microscope offers superior optics and high quality construction.  This is one of the most widely used microscopes in veterinary clinics and doctor’s offices.  Nikon’s Chromatic abberation-free infinity (CFI60) system provides an expandable platform for more advanced … Continue reading

06 Sep

Battery Powered Centrifuge

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The HemataSTAT II by Separation Technology, which is part of Thermo Fisher Scientific, offers a solution for use of a microhematocrit centrifuge, where there is a limited or no power source .   I happen to stumble upon this centrifuge upon the request … Continue reading

03 Sep

DI Water

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Ion exchange in water treatment removes monovalent ions from water such as Na+, K+, and Cl−; divalent ions such as Ca2+ and Mg2+; and other polyvalent inorganic ions such as SO42− and PO43−.  These ions contribute to the conductivity of … Continue reading