226 Results for: "pH Colored Solutions"

Supplier: Honeywell Research Chemicals

Sodium thiosulfate solution, Volumetric, Reag. Ph. Eur, Concentration: 0.1 M Na2S2O3 (0.1N), CAS Number: 7772-98-7, Molecular Formula: Na2S2O3, Molecular weight: 158.11 g/mol, Container type: poly bottle, color: colourless, Form: liquid, Size: 1L

Supplier: Thermo Scientific Chemicals

HEPES, 1.0M buffer soln., pH 6.5, sterile-filtered

Supplier: MP Biomedicals

Phenol red is an acid-base indicator. It is made by condensing two moles of phenol with one mole of o-sulfobenzoic acid anhydride.
Phenol Red is used as a pH indicator in cell culture applications. A solution of phenol red will have a yellow color at a pH of 6.4 or below and a red color at a pH of 8.2 and above. Phenol red in tissue culture media can act as a weak estrogen, especially with human breast cancer cells. Phenol red can be used to measure hydrogen peroxide in cultured macrophages in multiwell plates.
Store at Room Temperature (15-30 °C)

Supplier: Hach

pH Indicator Solution

Supplier: Advantec MFS

pH Test Papers–Various types of indicator papers cover a wide pH range to allow for good accuracy of determining pH value of a solution

Supplier: Cytiva

Universal indicator papers which have been impregnated with a mixture of several indicators.

Supplier: MilliporeSigma

Supplier: SPEX CERTIPREP LLC

Certified pH buffers are made using high purity starting materials and ASTM Type I Water, and are thoroughly analyzed for certified value and homogeneity. Buffers are accurate, premium grade for calibration and quality control checks.

Supplier: Cambridge Diagnostic Products

Each vial contains enough buffer to prepare one gallon of pH 7.15 buffer solution for use in the five-step staining process

Supplier: Spectrum Chemicals

Strong Iodine Solution, 5 Percent (w/v) (DEA List I Chemical), USP. 

Supplier: Hach

Phenol Red Indicator Solution

Supplier: CANCER DIAGNOSTICS, INC.

The Endure Staining System is designed to produce precise, consistent H&E staining.

Supplier: Cytiva

Blue litmus and red litmus papers facilitate a general test for acid or alkaline reaction. The change occurs around pH 5 to 8. They are particularly recommended for educational use.

Supplier: Honeywell Research Chemicals

Nitric acid, Purity: >/=65%, Grade: Puriss. P.a, Reag. ISO, Reag. Ph. Eur, Cas: 7697-37-2, MF: HNO3, Molar Mass: 63.01 g/mol, Synonym: Laboratory Chemical, Container: Poly bottle, Color/Form: Colorless to Almost Colorless Liquid, Applicati

Supplier: SPEX CERTIPREP LLC

QC sample directly traceable to NIST SRMs, mercury free, guaranteed stable for at least one year after your receipt, and supplied with a full certificate of analysis

Supplier: Adipogen

Water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range and frequently used in cell biology laboratories. Widely used as cell tissue culture pH marker. A small amount of phenol red added to the growth medium will have a pink-red color under normal conditions. Typically, 15 mg/l are used for cell culture. In the event of problems, waste products produced by dying cells or overgrowth of contaminants will cause a change in pH, leading to a change in indicator color. For example, a culture of relatively slowly dividing mammalian cells can be quickly overgrown by bacterial contamination. This usually results in an acidification of the medium, turning it yellow. The waste products produced by the mammalian cells themselves will slowly decrease the pH, gradually turning the solution orange and then yellow. This color change is an indication that even in the absence of contamination, the medium needs to be replaced. Shown to be a weak estrogen mimic (possible through inpurities), which can enhance the growth of cells that express the estrogen receptor in cell cultures. Might be useful as a differentiation factor.

Supplier: Avantik

Optik Type 1 Bluing Reagent is bluing reagent with a pH of 8.0 to assure proper bluing of hematoxylin stained tissue sections. It is also more resistant to the effects of carry-over and remains in the proper pH range for a longer period of time.

Supplier: Epredia

Employ a gentle, pH-controlled solution for bluing hematoxylin with the Epredia™ Shandon™ Bluing Reagent.

Supplier: Adipogen

Fluorescent probe and pH indicator. It fluoresces blue in acidic solutions and in acidic organelles but fluoresces green in more basic organelles. This compound is potentially useful as a coloring agent, biological stain or optical detecting reagent. It is used in water-in-oil-in-water emulsions and as a substrate for lipase activity. Spectral data: lambdaex 375nm, lambdaem 404nm in water.

Supplier: Electron Microscopy Sciences

Fixative Reagent Grade (Karnovsky’s). This fixative contains 3% glutaraldehyde and 2% formaldehyde in 0.1M phosphate buffer, pH 7.4. Karnovsky’s with formalin 2% and Biological glutaraldehyde 3% in 0.1m Phosphate Buffer. Karnovsky’s with paraformaldehyde solution and EM grade glutaraldehyde.

Supplier: MP Biomedicals

Streptozotocin, a glucosamine-nitrosourea, is a DNA alkylating agent that enters cells exclusively via the GLUT2 glucose transport protein. Streptozocin, a diabetagen, is especially toxic to pancreatic islet insulin-producing β-cells. It is toxic to GLUT2 positive neuroendocrine tumor cells.

Supplier: Spectrum Chemicals

Bromocresol Purple is a pH indicator that is typically prepared as a 0.04% solution. It is used to measure albumin in medical laboratories and is added to acid stop baths used in photographic film processing to indicate when the solution is no longer acidic and needs to be replaced

Supplier: MP Biomedicals

Imidazole is a histamine antagonist.
Imidazole can be used to prepare buffers in the pH range of 6.2-7.8 at 25 °C. It is also a chelator for the binding of various divalent cations.
Solutions can be successfully sterilized by autoclaving, and are stable for at least 2 years at 2-8 °C, protected from light

Supplier: Electron Microscopy Sciences

Michel’s Fixative, pH 7.0 – 7.4

Supplier: G-Biosciences

Ellman's reagent is a versatile, water-soluble compound for quantifying free sulfhydryl groups in solution. It reacts with a free sulfhydryl group to yield a mixed disulfide and 2-nitro-5-thiobenzoic acid (NTB), a measurable yellow colored product at 412nm.
Ellman's reagent is very useful as a free sulfhydryl assay reagent due to its high specificity for -SH groups at neutral pH, high molar extinction coefficient and short reaction time.

Supplier: Rockland Immunochemical

TMB ELISA Peroxidase Substrate (3, 3', 5, 5' - Tetramethylbenzidine) is a chromogenic substrate used to visualize antibody reactivity in ELISA experiments. In the presence of peroxidases, TMB can act as an electron donor for the conversion of peroxides to water, changing the color of solution to a blue color equivalent to the degree of reactivity. This reaction can be halted with acid to change the TMB to yellow. TMB ELISA Peroxidase Substrate is ideal for investigators in Microbiology, Immunology, and Cancer research.

Supplier: StatLab

A buffered alkaline rinse with a mild pH (8.0).

Supplier: Electron Microscopy Sciences

Perfusion washes and fixatives are ready to use solution which are recommended by the NeuroScience Association.

Supplier: Electron Microscopy Sciences

Millonig’s phosphate buffered formalin as modified by Carson, Martin and Lynn, by using 4% formalin in 0.1M sodium phosphate monobasic with sodium hydroxide to pH 7.2

Supplier: StatLab

A buffered alkaline rinse with a mild pH (8.0).