Posts Tagged ‘Scientist’
The Home Scientist 010 – Forensic Fingerprinting IV: Gentian Violet
Using gentian violet to reveal latent fingerprints on sticky tape.
The Home Scientist 021 – Calibrating a Disposable Pipette Gravimetrically
Using an accurate balance to determine the actual volume per drop delivered by a disposable plastic (beral) pipette.
The Home Scientist 011 – Forensic Fingerprinting V: Acidified Peroxide
Using vinegar and drugstore hydrogen peroxide to reveal latent fingerprints on a brass cartridge case.
The Home Scientist 012 – Forensic Fingerprinting VI: Dusting
Using baby powder to reveal latent fingerprints on a glass object by dusting.
The Home Scientist 016 – Synthesize Copper Compounds
Synthesizing copper(II) acetate and copper(II) chloride from the copper(II) carbonate that Dr. Mary Chervenak produced in segment 004 from root killer and baking soda, using distilled white vinegar and the hydrochloric acid we purified in segment 007.
The Home Scientist 013 – Cheap Sulfuric Acid, Part I
Analyzing cheap hardware store sulfuric acid for concentration and purity
The Home Scientist 019 – Testing for boron with curcumin (turmeric)
Testing for the element boron using curcumin, a yellow dye we extract from the spice turmeric. With curcumin, boron forms an intense red complex called rosocyanine, which allows boron to be detected at very low concentrations in water, soil, and so on.
The Home Scientist 008 – Forensic Fingerprinting II: Ninhydrin
Using ninhydrin to reveal latent prints on paper or other porous surfaces.
The Home Scientist 024 – Making thin-layer chromatography (TLC) plates
How to make thin-layer chromatography plates (TLC plates) for a few cents each that are as good as commercial TLC plates that sell for a dollar or two each. You can use these home-made TLC plates the same way you’d use chromatography paper, but the plates provide sharper separations and require far less analyte. They also lie flat, and are much easier to store for later reference.
The Home Scientist 020 – Isolating Bromine
Isolating elemental bromine from sodium bromide, sold as bromine base in pool and spa supply stores.