Kjeldahl catalyst acc. to Wieninger
Supplier: Merck
Kjeldahl catalyst acc. to Wieninger, Contents: >94% Na₂SO₄; >1,45% CuSO₄; >1,5% Se
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Dehydrated culture media, CASO broth
Supplier: Merck
CASO broth is a universal culture medium, a selective and differential medium for the primary isolation of members of the protease without indicator or inhibitor. Intended for a broad range of applications.
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indicator for metal titration, Supelco®
Supplier: Merck
indicator for metal titration, Supelco®
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N-Benzylidenebenzylamine, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Indicator for organolithium assay.
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Starch, soluble, extra pure pH 6.0 - 7.5 (20 g/l, H₂O, 25 °C)., SAFC®
Supplier: MERCK PRODUCTION CHEMICALS
Starch, soluble, extra pure pH 6.0 - 7.5 (20 g/l, H₂O, 25 °C)., SAFC®
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Ammonium standard solution, 1000 mg/L NH₄ in water (from NH₄Cl) Certipur® standard for Ion Chromatography, Supelco®
Supplier: Merck
Ammonium Standard, Ammonium standard solution, 1000 mg/L, Certipur®, Supelco®, Contents: NH₄Cl in H₂O, Application: Ion chromatography standards
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TLC silica gel 60, unmodified layers, glass backed, LuxPlate®
Supplier: Merck
The LuxPlate® range of high fluorescence TLC plates contains an increased amount of fluorescent dye making it easier to identify small amounts of isolated material. Furthermore, the amount of binder added is elevated, resulting in a significantly brighter TLC plate with an even more stable and robust surface.
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Methyl purple, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Methyl Purple,in H2O (Methyl Purple indicator solution)
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Phosphate standard solution, concentrate, 1,000 mg PO₄, Titrisol®, Supelco®
Supplier: Merck
Phosphate standard, Titrisol®, 1000 mg/l, Titrisol®, Supelco®, Contents: H3PO4 in water, Application: Ion chromatography standards
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HPTLC plates silica gel 60, modified CN, DIOL, NH₂, glass backed
Supplier: Merck
CN- and DIOL-modified silica plates are moderately polar that are suitable for both normal and reversed phase systems. The amino modified NH₂ plate provides weak basic ion exchange characteristics with special selectivity for charged compounds offering an alternative to PEI cellulose.
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HPTLC and TLC plates, silica gel 60, MS-grade
Supplier: Merck
Coupling TLC plates to mass spectrometry is a new field of high interest, which will contribute strongly to the progress of planar chromatography. The MS-grade plates are much cleaner than standard TLC/HPTLC plates providing higher sensitivity and reduced background signals. This allows trace analysis with mass spectrometry detection in lower nanogram range.
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Silica gel, Pore size: 60 Å (0.2-0.5 mm) for column chromatography, Millipore®
Supplier: Merck
Silica gel, Pore size: 60 Å (0.2-0.5 mm) for column chromatography, Millipore®
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Perfect DNA™ markers
Supplier: Merck Millipore (Novagen)
Molecular size markers for routine use in plasmid cloning, the Perfect DNA™ markers contain sets of DNA species having convenient, easy-to-remember sizes for agarose gel analysis. The markers have uniform band intensities except for the indicated reference bands, which are useful for instant band identification.
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Chloride standard solution, 1,000 mg/L Cl- in water (from HCl), Titrisol®, Supelco®
Supplier: Merck
Chloride standard, concentrate Titrisol®, 1000 mg/l, Titrisol®, Supelco®, Matrix: H₂O, Contents: from HCl, Application: Ion chromatography standards, Analytical testing
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Ammonia solution 25%, EMPROVE® ESSENTIAL Ph. Eur., BP, SAFC®
Supplier: MERCK PRODUCTION CHEMICALS
Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*).
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HPTLC plates with spherical particles, LiChrospher®
Supplier: Merck
HPTLC LiChrospher® plates are based on spherical-shaped silica 60 with a particle size of 7 µm, and narrow particle size distribution similar to the phases used in HPLC. LiChrospher® HPTLC plates possess a selectivity that is comparable to respective HPTLC plates, however, plate height and separation numbers are further improved resulting in shorter analysis times.
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HPTLC plates silica gel 60, RP-modified layers, glass backed
Supplier: Merck
Our NH₂, CN- and DIOL-modified silica sorbents are less polar then conventional silica phases, making them ideal for separating hydrophilic or charged substances. Our moderately polar cyano- and diol-modified silica plates can be used for both normal phase and reversed phase systems. An alternative to PEI cellulose, amino-modified NH₂ plates provide weak basic ion exchange characteristics with special selectivity for charged compounds.
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Sodium benzoate 99.0-100.5%, EMPROVE® ESSENTIAL Ph. Eur., BP, NF, FCC, E211, SAFC®
Supplier: MERCK PRODUCTION CHEMICALS
Elemental impurity specifications have been set considering ICH Q3D (Guideline for Elemental Impurities). Class 1-3 elements are not likely to be present above the ICH Q3D option 1 limit, unless specified and indicated (*). Corresponds to Ph Eur,BP,NF,FCC,E 211
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Bromocresol green-methyl red solution mixed indicator, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Suitable for titration of morpholine
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TLC plates, silica gel 60, modified layers, glass backed
Supplier: Merck
RP-2, RP-8 and RP-18 are based on silica gel 60 modified with aliphatic hydrocarbons. The chain length, in combination with the degree of modification, defines the ability to tolerate water in the solvent system and strongly affects retention. Migration time increases in the order RP-2, RP-8 and RP-18 using the same solvent composition. RP-8 and RP-18 can be run with up to 60% water in the solvent system.
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JC-1 iodide salt ≥95% (by HPLC), Calbiochem®
Supplier: Merck Millipore (Calbiochem)
A cationic, fluorescent, carbocyanine dye that can be used as a ratiometric indicator of mitochondrial potential δΨm in cells, tissues, and isolated mitochondria.
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Peroxidase Indicator Reagent
Supplier: SIGMA ALDRICH MICROSCOPY
It contains p-Phenylenediamine diHCL (1 part) and catechol (2 parts). Commonly referred to as Hanker Yates reagent. Kit component in the Sigma Leukocyte peroxidase (myeloperoxidase) Procedure, 390A.
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BCECF AM ester 1 mg/mL in DMSO fluorescent pH indicator, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
An intracellular fluorescent pH indicator.
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Sulphate standard solution, concentrate, 1000 mg SO₄, Titrisol®, Supelco®
Supplier: Merck
Titrisol® standards are traceable to standard reference material from NIST.
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BCECF AM ester ≥85% (by HPLC), Calbiochem®, Sigma-Aldrich®
Supplier: Merck Millipore (Calbiochem)
A variable mixture of cell-permeable ester derivatives of BCECF that are hydrolyzed by cytosolic esterases to yield intracellularly trapped indicator BCECF. Has been used to monitor intracellular pH changes in mammalian fibroblasts, gastric cells, lymphocytes, myocytes, and distal convoluted tubule
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3-Methoxydiphenylamine 98%, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
3-Methoxydiphenylamine can be used in the preparation of 3- methoxydiphenylamine-4-diazonium salts (MDP-4-DS) and the corresponding diazoresins.[1] Diazonium salts and diazoresins find applications in dyes, stains, indicators, general laboratory use, and industrial applications.
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Quin 2 potassium salt hydrate, Sigma-Aldrich®
Supplier: SIGMA ALDRICH MICROSCOPY
Calcium-specific chelator and indicator. Upon binding calcium there is a shift in the UV spectrum and an enhancement of fluorescence.
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Kjeldahl tablets
Supplier: Merck
In addition to the traditional 5 g Kjeldahl tablets, which are added as catalysts to the digestion mixture, Merck Millipore can offer the 3,5 g tablet. This gives the flexibility needed to find the optimal setting for the catalyst/sulphuric acid ratio.