Laboratory


Piranha solution gets its name for its aggressive attack of organic material, like a school of piranha having a feeding frenzy.
Piranha solution is an aqueous mixture of sulfuric acid (H2SO4) and hydrogen peroxide (H2O2) that is used to remove organic residue from surfaces and make them more hydrophilic. It is also known as piranha etch because another common use is etching circuit boards. Piranha solution is wicked stuff, so read […]

Piranha Solution Preparation, Use, and Safety



Bromcresol Purple Chemical Structure
This is the recipe for bromocresol purple, which is a common pH indicator. The final solution will be 0.04% aqueous bromocresol purple. Bromocresol Purple Ingredients Bromocresol purple indicator is an aqueous solution of powdered dye. The solid is a dark violet powder, while the indicator solution is purple. It’s important […]

Bromocresol Purple Indicator Solution Recipe



Distilled water is free of minerals.
Distilled water is water purified by condensing water vapor into liquid water. Usually, the distillation process involves boiling impure water and collected the condensed vapor in a fresh container. However, you can obtain distilled water from damp soil, plants, snow, and rain, too. You can distill water to make drinking […]

How to Make Distilled Water – 5 Easy Methods


Saline solution is made by dissolving sodium chloride into water.
Saline solution is a solution of salt (sodium chloride) in water. While it’s commercially available, saline solution is easy to make yourself, using nothing more complicated than salt and water. Use the Right Salt and Water If you’re making saline solution to soak sore muscles or as a mouth rinse, […]

How to Make Saline Solution