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What could be a possible substitute for cresol red to prepare a hydrogen carbonate indicator?
Cresol red is a chemical dye used as an indicator for instruments that measure pH levels. It has a pH range of 0.5 to 2.5 and transitions from rose to brown to yellow. The closest substitute in terms of pH range?æwould be the Crystal violet, also known as Gentian violet. It has a pH range of 0.8 to 2.5 and transitions from yellow to blue to violet.
What is the extinction coefficient of crystal violet?
balls
Why is KHP used as a primary standard for non aqueous titration?
KHP (potassium hydrogen phthalate) is available extremely pure (which is always good for a primary standard) and gives a very sharp end-point especially with Crystal Violet Indicator
What will be the color change of crystal violet at different pH?
Crystal violet is used in Gram's method of bacteria classification. At a pH of 1.0, the solution turns green, and when in a strongly acidic solution, it turns yellow.
Could a ph-sensitive color indicator be ussed to reveal the presence of a contaminant in a fluid that should be sterile?
by white to violet
What is the secondary stain in gram stain procedure?
It is crystal violet & stains all cells purple.
What is gentian violet?
Traditional antifungal drugs such as.gentian violet (also known as crystal violet)
What could be a possible substitute for cresol red to prepare a hydrogen carbonate indicator?
Cresol red is a chemical dye used as an indicator for instruments that measure pH levels. It has a pH range of 0.5 to 2.5 and transitions from rose to brown to yellow. The closest substitute in terms of pH range?æwould be the Crystal violet, also known as Gentian violet. It has a pH range of 0.8 to 2.5 and transitions from yellow to blue to violet.
What is the name of the acide base color indicator found in MacConkey agar?
Lac+ bacteria is acid base color indicator that lowers the pH of the MacConkey agar. The MacConkey agar contains neutral red dye, lactose, peptone, and crystal violet dye.
What is crystal violet iodine complex?
In Gram staining procedure during bacterial staining , iodine forms a complex with crystal violet stain which stains Gram positive bacteria blue to violet .
What is the extinction coefficient of crystal violet?
balls
Why is Iodine used in Gram staining?
Iodine is added as a mordant to enhance crystal violet staining by forming a crystal violet-iodine complex.
Function of crystal violet?
Crystal violet is a hexamethyl also known as methyl violet 10B This is much darker than 2B, and often darker than 6B. It is used in biological stainang particularly gram staining together with safranin and iodine. Crystal violet was also used to treat strept throat. Doctors used to swab it on the back of your throat.
Why do you add crystal violet stain in simple staining method?
Because violet dye is the least expensive.
What color would the bacterial cell have when viewed microscopically after the treatment with ammonium oxalate crystal violet?
Violet
What is the color of lime water in pH indicator?
The color is blue to violet.
What is the indicator that turns the agar medium pink with copper?
MacConkey agar contains bile salts, lactose, peptone. crystal violet dye, and neutral red dye. The agar appears a medium pink with a copper undertone.
