microBiometer Refill PRO 50 cards and powdermicroBIOMETER PRO 50 test Refill Pack This refill pack has 50 more sample test cards, 50 reagent sachets and 5 more testubes and pipettes. The refill pack needs to be used with the whisker mixer, the soil sampler and the soil sifter in the starter kit. The patented microbiometer test only takes around 10 minutes to perform, yet accuracy is on par with lab tests costing 10 times as much. Mix sifted soil for 30 seconds in the reagent solution, let it