Search results
Results From The WOW.Com Content Network
[6] [64] A few drops of methylene blue solution added to a sample of milk should remain blue (oxidized form in the presence of enough dissolved O 2), otherwise (discoloration caused by the reduction of methylene blue into its colorless reduced form) the dissolved O 2 concentration in the milk sample is low indicating that the milk is not fresh ...
The aqueous solution in the classical reaction contains glucose, sodium hydroxide and methylene blue. [14] In the first step an acyloin of glucose is formed. The next step is a redox reaction of the acyloin with methylene blue in which the glucose is oxidized to diketone in alkaline solution [6] and methylene blue is reduced to colorless leucomethylene blue.
1 Tbsp = 3 tsp* Dessertspoon dsp 2 tsp 160 9.858 120 7.393 1 dsp = 2 tsp Teaspoon: tsp: 1 tsp: 80: 4.929 60: 3.697 1 tsp = 2 csp Fluid Dram fl dr, fʒ 3 ⁄ 4 tsp / 1 tsp: 60: 3.697 60: 3.697 = 1 ⁄ 8 fl oz Coffeespoon csp 1 ⁄ 2 tsp 40 2.464 30 1.848 1 csp = 2 ssp Fluid Scruple f℈ 1 ⁄ 4 tsp 20: 1.232 20: 1.232 = 1 ⁄ 24 fl oz Saltspoon ...
In the early 2000s some companies began selling measuring spoons that defined a dash as 1 ⁄ 8 teaspoon, a pinch as 1 ⁄ 16 teaspoon, and a smidgen as 1 ⁄ 32 teaspoon. [ 26 ] [ 27 ] Based on these spoons, there are two smidgens in a pinch and two pinches in a dash.
This is equal to about 61.6 μL (U.S.) or 59.2 μL (Britain). Pharmacists have since moved to metric measurements, with a drop being rounded to exactly 0.05 mL (50 μL, that is, 20 drops per milliliter). In hospitals, intravenous tubing is used to deliver medication in drops of various sizes ranging from 10 drops/mL to 60 drops/mL.
Methyl blue is a chemical compound with the molecular formula C 37 H 27 N 3 Na 2 O 9 S 3.It is used as a stain in histology, [1] and stains collagen blue in tissue sections. It can be used in some differential staining techniques such as Mallory's connective tissue stain and Gömöri trichrome stain, and can be used to mediate electron transfer in microbial fuel cells.
New methylene blue (also NMB) [clarify] is an organic compound of the thiazine class of heterocycles. It is used as a stain and as an antimicrobial agent. It is classified as an azine dye, and the chromophore is a cation, the anion is often unspecified.
The observed spectrum (green) is the sum of the spectra of HA (gold) and of A − (blue), weighted for the concentration of the two species. When a single indicator is used, this method is limited to measurements in the pH range p K a ± 1, but this range can be extended by using mixtures of two or more indicators.