Archive for September, 2010

Wet Collection

When InnovaPrep acquired the SpinCon and OMNI lines in May, we already knew they were two great products based on a great underlying technology. Sample collection is a logical extension of our business, it is every bit as important as sample preparation. It all goes back to the fundamentals. If you want to determine whether there are viable pathogens or other microorganisms in the air, you will get good results with a high-volume sampler that is kind to the organisms, by collecting them into a wet environment. Continue…

Sample Prep Part 10

As we see from the summary slides 24 and 25, the data for the 1 micron and 4.5 micron bead concentrations are very similar, but I think the difference is still significant.  The scaling of forces of all kinds acting on the smaller (nanometer-range) beads may be making concentration of those very small particles more difficult.  That said, the longer we have been working on this, the better we get at concentrating nanoparticles by controlling the effective parameters more carefully. Continue…

Sample Prep Part 9

Slide 23 shows a data set for a larger pore size fiber. We have gone up from 100 kD to 0.05 micron. I think we have gone up in size, anyway. It is difficult to compare the kD ratings of fiber membranes to the micron ratings in some cases, because the two ratings are a bit like comparing apples and oranges. Continue…

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