424 Results for: "Titration Solutions"

Supplier: MP Biomedicals

Hydroxynaphthol blue, disodium salt is used for determining the endpoint in metal complexation titrations.

Supplier: MilliporeSigma

Supplier: Aqua Solutions

Bromine number titration solvent ASTM 1159 & ASTM D 2710

Supplier: GFS Chemicals

Solvent for volumetic analysis

Supplier: Aqua Solutions

Supplier: TCI America

CAS Number: 3810-74-0 MDL Number: MFCD00037023 Molecular Formula: C21H39N7O12 Molecular Weight: 728.69 Purity/Analysis Method: 95.0% (N,T) Form: Crystal Color: White Specific rotation [a]20/D: -85 deg (C=1, H2O)

Supplier: MP Biomedicals

Glutaraldehyde is also referred to as glutaral, 1,5-pentanedione, potentiated acid glutaraldehyde, sonacide, and glutardialdehyde. Pure monomeric glutaraldehyde has an absorbance peak at 280 nm and the main impurity, possibly a polymer, has an absorbance peak at 235 nm. Upon analysis, this product is 25-28% by titration and has an A235/A280 ratio of not more than 0,5. Monomeric glutaraldehyde may be purified from polymeric glutaraldehyde by treatment with charcoal (5% w/v) and subsequent filtration (3-4 times). Untreated glutaraldehyde has an absorption at 235 nm that is 5 times greater than that at 280 nm, whereas, after three washings the values are about equal. Glutaraldehyde is a bifunctional cross-linking reagent, reacting with NH2 groups to form Schiff's bases.

Supplier: ALADDIN SCIENTIFIC

Reaction of 4-bromoaniline with acetic acid and potassium thiocynate in solution of bromine in acetic acid yields 2-amino-6-bromobenzothiazole. 2-Amino-6-bromobenzothiazole can also be synthesized from 2-aminobenzothiazole via monobromination with silica-supported quinolinium tribromide.

Application:2-Amino-6-bromobenzothiazole may be used in the synthesis of the following2-amino-6-arylbenzothiazole compounds:6-p-tolylbenzo[d]thiazole-2-amine6-(4chlorophenyl)benzo[d]thiazole-2-amine6-(4-methoxyphenyl)benzo[d]thiazole-2-amine6-(3,5-bis(triflouromethyl)phenyl)benzo[d]thiazole-2-amine6-phenylbenzo[d]thiazole-2-amine

Supplier: TCI America

CAS Number: 89797-68-2 MDL Number: MFCD00068733 Molecular Formula: C3H6N4S Molecular Weight: 130.17 Purity/Analysis Method: 98.0% (HPLC,T) Form: Crystal Melting point (°C): 88

Supplier: MP Biomedicals

2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid is a useful indicator for calcium titrations with EDTA in the presence of magnesium.

Supplier: Aqua Solutions

SKU# 1368-4L, ASTM D1159, D2710, , , DOT: Corrosive liquid, flammable, n.o.s. (Acetic acid, Methanol), 8, UN2920, PG II,Size: 4L,Case Size: 4 x 4L

Supplier: Adipogen

TMBZ is a chromogenic reagent utilized for peroxidase detection. It has been developed as an alternative to benzidine. Although the TMBZ solution is colorless, it turns bluish-green (lambdamax: 655 nm) in the presence of hydrogen peroxide and peroxidase. The structure of this bluish-green complex is thought to be a radical form of two oxidized TMBZ molecules. This peroxidase substrate is used in staining procedures in immunohistochemistry as well as being a visualising reagent used in enzyme-linked immunosorbent assays (ELISA). The substrate produces a soluble end product that is pale blue in color and can be read spectrophotometrically at 370 or 620-650 nm. The TMB reaction may be stopped with 2M H2SO4 (resulting in a yellow color), and read at 450nm.

Supplier: TCI America

Streptomycin sulfate is the first aminoglycoside antibiotic derived from the soil microbe Streptomyces griseus by Waksman and Schatz

Supplier: MP Biomedicals

Tricine was first prepared by Good for use as a buffer for chloroplast reactions. It is structurally similar to Tris, but is much less inhibitory at high concentrations. For ATP assays using firefly luciferase, tricine buffer at 25 mM was found to be the best of ten common buffers tested.
Tricine is used as buffer component for separation of low molecular weight peptides. Tricine can be used in cryopreservation medium for the preservation of tissues and organs. Cryopreservation depends on the physical and chemical characteristics of the preservation medium used. The pH values and pK values for tricine/DMSO mixtures has been reported down to -20 °C. Tricine has been found to be an efficient scavenger of hydroxyl radicals in a study of radiation-induced membrane damage. Tricine is typically the buffer of choice in SDS-PAGE systems when separating proteins in the range of 1 to 100 kDa.
A buffer may be prepared by titrating with sodium hydroxide to the desired pH, using about a half-equivalent of NaOH.

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: Adipogen

A sensitive reagent for measuring the free sulfhydryl content in proteins, peptides, and tissues. Used to characterize reactive thiol groups and photometric determination of thiols and for measuring low-molecular mass thiols such as glutathione in both pure solutions and biological samples, such as blood. It can also measure the number of thiol groups on proteins. Through reaction with aliphatic thiol groups a mixed disulfide of protein thiol and one mole of 2-nitro-5-thiobenzoate per mole of protein sulfhydryl group is being formed. DTNB has little absorbance. Reaction with -SH groups on proteins (from any solvent accessible Cys) under mild alkaline conditions (pH 7-8) produces the 2-nitro-5-thiobenzoate anion, which gives an intense yellow color with an absorption maximum at 409.5nm (Extinction coefficient: 14150 M-1*cm-1). Sensitive to various buffer ions, therefore, the extinction coefficient used to calculate the number of sulfhydryl groups must be matched to the reaction conditions. In case the thiol groups are in disulfide bonds, they must be reduced under anaerobic conditions prior to reaction with DTNB.

Supplier: MilliporeSigma

Supplier: Photovolt Instruments

Titrator

Supplier: Ward's Science

Perform a common analytical technique, complexometric titration, to quantify calcium in samples.

Supplier: MilliporeSigma

Sodium hydroxide 0.1 mol/l (0.1 N) in aqueous solution, Titripur® Reag. Ph. Eur. volumetric solution, Supelco®

Supplier: Ward's Science

With this kit, students determine dissolved oxygen concentration without a meter.

Supplier: MilliporeSigma

Sodium hydroxide 1 mol/l (1 N) in aqueous solution, Titripur® Reag. Ph. Eur., Reag. USP volumetric solution, Supelco®

Supplier: MilliporeSigma

Tetramethylammonium hydroxide 0.1 mol/L (0.1 N) in 2-propanol/methanol, Titripur® Reag. USP for titration in non-aqueous media, Supelco®

Supplier: Ward's Science

CAS Number: 77-09-8
Formula: C20H14O4
Density: 1.299 g/mL
Solubility: Alcohol and Alkalis
Shelf Life: 36 Months

Supplier: Honeywell Research Chemicals

Supplier: Ricca Chemical

pH Indicator solution universal pH 2-10

Supplier: Ward's Science

Meets AP Science Practices 2, 4, 5, and 6

Supplier: Ward's Science

Determine the purity of a soda ash sample via gravimetry and acid-base titration.

Supplier: Hach

For carbon dioxide determination by Digital Titration.

Supplier: Kemtec

Use the Mole Concept to Calculate Various Concentrations of Chemical Solutions.