If stored in a plastic bag so it can’t dry out, you can wait up to 72 hours. If more time is needed, refrigerate the samples for up to a month.
Yes, the shelf life is 5 years.
This had been tested and biochar can interfere in the microBIOMETER® test. Soil treated with biochar more than 6 months ago does not appear to be a problem, but the biochar in freshly treated biochar soils can lead to falsely high readings.
Your lens may be smudged. If you have a case on your phone, it might be a good idea to take the phone out in order to thoroughly clean the lens. Or you’re trying to image a single test at a time on a 10-test card. 10-test cards should be imaged in their entirety.
Yes. When you draw up the microbes in the pipette, be careful not to get any of the floating debris at the top of the tube in the pipette.
10 to 15 minutes is ideal. Longer than that and your reading will start to decrease as eventually the microbes begin to settle to the bottom.
The app uses the areas surrounding the window to compensate for differences among phones and lighting conditions. It’s best to wipe off any liquid on the calibrating grayscale surround.
Yes, but be sure not to get too close to any of the printed lines and shapes surrounding the sample window.
If you use a coco based medium you need to ask us for the filter version of our soil test. The filter version contains a plunger that pushes any floating particles down and allows only microbes to rise to the top for sampling.
Yes, the cold temperatures will not effect your microBIOMETER® and supplies. They are perfectly fine to use.
Yes, you can. Instead of adding water to the reagent solution you would add the compost tea, whisk for 30 seconds and let rest for 10 minutes. Since microbial biomass results are reported in micrograms to gram of soil, you will need to divide the number you get from the app by 20 to give you micrograms to milliliter of tea. microBIOMETER® is a great tool for comparing different teas as well as tracking the growth of microbes in the tea over time.
It is not imperative to use distilled water. We don’t discourage it, but it isn’t necessary. Using city water won't skew or invalidate the results.