Methods for measuring protein concentration using the Open Colorimeter and 595nm LED.
This week we have a guest author post from Fabricio Cano, Pablo Cremades and Nano Castro. They are members of reGOSH in Argentina where they have been developing open hardware tools and methods for measuring soil active carbon.
Revisiting and sharing some of our earlier work developing a beer color test for home brewers.
In this post we describe a prototype right-angle (R/A) cuvette holder for turbidity measurements.
Testing three water quality tests for the Open Colorimeter. These assays are ammonia, nitrate and nitrite.
Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm
Colorimetric assay for measuring ammonia levels using API test kit. Range: 0-8ppm