A developer containing both Metol and hydroquinone is called an MQ developer. (wikipedia.org)
by varying the quantities of Metol, hydroquinone, and restrainer, and adjusting the pH, the entire range of continuous tone developers can be made. (wikipedia.org)
Therefore, this form of Metol replaced most other developing agents except for hydroquinone, Phenidone (which is more recent than Metol), and derivatives of Phenidone. (wikipedia.org)
Metol is an excellent developing agent for most continuous tone developer applications, and it has been widely used in published developer formulas as well as commercial products. (wikipedia.org)
However, it is difficult to produce highly concentrated developer solutions using Metol, and therefore most Metol developers are supplied in dry chemical mix. (wikipedia.org)
To take an extreme example, imagine a two-bath developer in which all the developing agent is in the first bath: a typical formula uses 5 gm/liter of metol. (shutterbug.com)
In that 25ml (0.025 liters) of developer, otherwise defined as 0.04 liters, there is 5x0.025 gm of metol: 1/8 of a gram. (shutterbug.com)
Well surprisingly there is only 2 compounds which make up the developer, Sodium Sulphite the preservative and accelerator for the developing agent and Metol the developing agent. (cameramill.co.uk)
Organic1
Metol (or Elon) is a trade name for the organic compound with the formula [HOC6H4NH2(CH3)]HSO4. (wikipedia.org)
Highly2
The use of Metol in highly caustic solutions and the presence of other materials in darkrooms that have been implicated in dermatitis-such as hexavalent chromium salts-may exacerbate some health impacts. (wikipedia.org)
Highly informative diagnostics metol is rheoencephalography. (osvilt.com)
Water1
750cc of water at about 50 C add , in the following order, a little of the Sodium Sulphite, to stop the Metol oxidising when you mix it, then gradually add the Metol , stirring until it is all dissolved. (silverlight.co.uk)
Phenidone1
Arista Premium Powder Paper Developer is a phenidone-based B&W paper developer that yields exceptional results with no Metol content. (freestylephoto.com)
Well surprisingly there is only 2 compounds which make up the developer, Sodium Sulphite the preservative and accelerator for the developing agent and Metol the developing agent. (cameramill.co.uk)
500ml water1
Add a pinch of sulphite to the 500ml water before adding and fully dissolving the metol. (pictorialplanet.com)
Metol d'lakhey malkuta wa hayla wa teshbukhta l'olam almin. (abwoon.org)
Formulas1
Metol is an excellent developing agent for most continuous tone developer applications, and it has been widely used in published developer formulas as well as commercial products. (wikipedia.org)
Dermatitis2
The use of Metol in highly caustic solutions and the presence of other materials in darkrooms that have been implicated in dermatitis-such as hexavalent chromium salts-may exacerbate some health impacts. (wikipedia.org)
A dermatitis due to the irritating effect of metol. (nih.gov)
Agent1
Metol (also known as p-methylaminophenol hemisulfate) is a developing agent used in black and white analog photographic processing. (timlaytonfineart.com)
Time1
Some time later, Metol came to mean the N-methylated variety, and the o-methylated variety fell out of use. (wikipedia.org)
Common1
Aktien-Gesellschaft für Anilinfabrikation (AGFA) sold this compound under the trade name Metol, which became by far the most common name, followed by Eastman Kodak's trade name Elon. (wikipedia.org)