Public Lab Wiki documentation


1 | 2 | | #15211

Reagents are a type of chemical which react to a specific compound, typically changing color or opacity when that compound is present. Usually, you add a few drops of a reactive chemical into a container of your sample, and look for a color change. Some reagents are dried onto flat strips or put inside glass tubes (for air testing).


Ask a question  or help answer future questions on this topic


Reagents are a really broad category, but some techniques related to them may be usable for various target chemicals.

Add an activity  or request an activity guide you don't see listed

Activities should include a materials list, costs and a step-by-step guide to construction with photos. Learn what makes a good activity here.

Additional work

Title Author Updated Likes Comments
What are the best practices for the management of lab chemicals? @Rehan 3 months ago 5
How to Test Soil for Oil & Gas Contaminants* please contribute @DanielleS over 3 years ago 5
Anyone have experience with diy soil testing methods for contaminants- Colorimetry, spectometry, reagents, etc? @DanielleS over 3 years ago 1
LaMotte and Earth Force low cost Water Monitoring kit @stevie about 4 years ago 2
How can we detect contaminants in water samples with a DIY spectrometer using reagents? @warren over 4 years ago 1
Draft: Find the concentration of a liquid with a DIY spectrometer @warren over 4 years ago 3
Does the Beer Lambert law apply to the opacity of reagents? @warren over 4 years ago 4
Question: Can DIY-spectrometer be used for analysis of soil @interestedperson_ha about 6 years ago 7
Evaluation of Pesticide Residues in Organic Raspberries using Different Extraction Solvents @silverhammer over 8 years ago 7
Detecting Pesticides in Organic and Conventional Raspberries using Open Source Instrumentation @silverhammer over 8 years ago 8
Reagent-based PAH, VOH, PCB testing kits for soil and water, with pricing @warren over 8 years ago 0
Show more