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Open Colorimeter test

Measuring proteins with the Bradford assay

Measuring proteins with the Bradford assay

Methods for measuring protein concentration using the Open Colorimeter and 595nm LED.
Joanne Long Sep 26, 2023
Soil Active Carbon - POXC

Soil Active Carbon - POXC

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.
IO Rodeo Sep 12, 2023
Measuring beer color with a 430nm colorimeter

Measuring beer color with a 430nm colorimeter

Revisiting and sharing some of our earlier work developing a beer color test for home brewers.
Joanne Long Sep 5, 2023
Measuring turbidity with a modified Open Colorimeter

Measuring turbidity with a modified Open Colorimeter

In this post we describe a prototype right-angle (R/A) cuvette holder for turbidity measurements.
Joanne Long, William Dickson Jun 6, 2023
Ammonia, nitrate and nitrite Open Colorimeter assays for water quality testing

Ammonia, nitrate and nitrite Open Colorimeter assays for water quality testing

Testing three water quality tests for the Open Colorimeter. These assays are ammonia, nitrate and nitrite.
Joanne Long, William Dickson Nov 2, 2022
Nitrate-API colorimetric assay

Nitrate-API colorimetric assay

Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm
Joanne Long Nov 1, 2022
Ammonia-API colorimetric assay

Ammonia-API colorimetric assay

Colorimetric assay for measuring ammonia levels using API test kit. Range: 0-8ppm
Joanne Long Nov 1, 2022

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