bromocresol purple


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bromocresol purple

[¦brō·mō′krē‚sȯl ‚pər·pəl]
(organic chemistry)
Dibromo-o-cresol sulfonphthalein, a yellow powder soluble in water; used as an indicator between pH 5.2 (yellow) and 6.8 (purple). Also known as bromcresol purple.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Number The name of reagent [R.sub.1] [R.sub.2] [R.sub.3] I Bromocresol green Br Br C[H.sub.3] II Bromophenol blue H Br Br in Bromothymol blue Br CH(C[H.sub.3]) C[H.sub.3] IV Bromocresol purple Br C[H.sub.3] H V Bromocresol blue Br C[H.sub.3] Br VI o-Cresol red C[H.sub.3] H H VII p-Cresol blue H C[H.sub.3] H VIII m-Cresol purple H H C[H.sub.3]
In an effort to understand the extent of impurities in these dyes and the potential impact on the expanded uncertainty of spectrophotometric pH measurements, we have examined seven commercially available sulfonephthalein pH indicators using liquid chromatography-mass spectrometry (LC-MS): bromocresol green (BCG), bromocresol purple (BCP), bromothymol blue (BTB), cresol red (CR), meta-cresol purple (MCP), phenol red (PR), and thymol blue (TB).
Souka, Studies on the Radiation Stability of Bromocresol Purple Solution, Nucl.
The following culture media were tested: 1) nonselective culture medium such as Columbia agar + 5% sheep blood (bioMerieux, La-Balme-Les-Grottes, France); 2) chocolate agar + PolyVitex (bioMerieux); 3) nonselective chromogenic medium UriSelect 4 (Bio-Rad); 4) Eosin methylene blue agar (Sigma Aldrich); 5) Drigalski agar (Bio-Rad); 6) MacConkey agar (VWR BDH Prolabo, Leuven, Belgium); and 7) bromocresol purple (bioMerieux).
Testing of several agar media revealed that 30% of the colistin-susceptible tested isolates gave false-positive results when bacterial colonies were recovered from acidifying media such as Drigalski, MacConkey, or bromocresol purple agar.
Human serum albumin, Cohn fraction V, solution, 10 g/dL, was purchased from MP Biomedicals (Irvine, California); bromocresol green (BCG) sodium salt and bromocresol purple (BCP) free acid were obtained from JT Baker Company (Phillipsburg, New Jersey) and Fluka Company (St.
There was a more acid environment in rhizosphere of mycorrhizal seedlings than in non-mycorrhizal seedlings, based on bromocresol purple dyeing.
Serum globulins contribute to the discrepancies observed between the bromocresol green and bromocresol purple assays of serum albumin concentration.
Yellow-pigmented colonies grew on bromocresol purple lactose agar plate after 48 hours of incubation at 37[degrees]C and appeared as thin gram-negative bacilli after gram-staining was performed.
Bromocresol purple method for serum albumin gives falsely low values in patients with renal insufficiency.
Quantitative culture of the bronchial aspirate on bromocresol purple agar, blood agar (grown in an atmosphere of 5% C[O.sub.2]), and chocolate agar plates yielded V.
All of the enteric bacteria isolated from the patients and grown on nonselective bromocresol purple medium were K.