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List of reagent testing color charts. It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2] For this reason it is essential to use multiple different tests to show all adulterants.
A mnemonic which includes color name (s) generally reduces the chances of confusing black and brown. Some mnemonics that are easy to remember: B eetle B ailey R uns O ver Y our G eneral B efore V ery G ood W itnesses. B each B ums R arely O ffer Y ou G atorade B ut V ery G ood W ater. B etter B e R ight O r Y our G reat B ig V acation G oes W ...
Marquis reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of formaldehyde and concentrated sulfuric acid, which is dripped onto the substance being tested. The United States Department of Justice method for producing the reagent is the addition of 100 mL of ...
Froehde reagent. The Froehde reagent is used as a simple spot-test to presumptively identify alkaloids, especially opioids, as well as other compounds. It is composed of a mixture of molybdic acid or a molybdate salt dissolved in hot, concentrated sulfuric acid, which is then dripped onto the substance being tested.
Shades of purple. There are numerous variations of the color purple, a sampling of which is shown below. In common English usage, purple is a range of hues of color occurring between red and blue. [1] However, the meaning of the term purple is not well defined. There is confusion about the meaning of the terms purple and violet even among ...
Mecke reagent. The Mecke reagent is used as a simple spot-test to presumptively identify alkaloids as well as other compounds. It is composed of a mixture of selenous acid and concentrated sulfuric acid, [1] which is dripped onto the substance being tested. The United States Department of Justice method for producing the reagent is the addition ...
25-pair color code chart used in certain kinds of wiring. A color code is a system for encoding and representing non-color information with colors to facilitate communication. This information tends to be categorical (representing unordered/qualitative categories) though may also be sequential (representing an ordered/quantitative variable).
free look 1. To be able to look around the map freely, usually limited by typical mechanics of the game such as the boundaries of the game world. This is usually an ability that is disabled to common users, but left in the game coding as a developer's tool and is unlockable if the proper code is known.