755 Results for: "Mobile phases and phase modifiers"
HPLC columns, SeQuant® ZIC®-HILIC
Supplier: Merck
The selectivity offered by ZIC®-HILIC is suitable for a wide variety of molecules containing hydrophilic or ionisable functional groups. This includes compounds such as carbohydrates, metabolites, acids and bases, organic and inorganic ions, metal complexes, amino acids, peptides, protein digests, plant and cell extracts, plus much more. Such compounds are normally characterised by a small or negative LogP value and have poor retention on reversed-phase columns.
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Haematoxylin modified solution Gill II used in nuclear staining, Sigma-Aldrich®
Supplier: Merck
Hematoxylin solution modified acc. to Gill II
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PLC plates, silica gel 60, unmodified and modified layers, glass backed
Supplier: Merck
PLC (Preparative Layer Chromatography) plates are based on the same proven Merck silica-binder technology as analytical TLC plates. Plates are available with layers of unmodified silica gel or RP-18 modified silica gel in several layer thicknesses, ranging from 500 to 2000 µm, with or without fluorescent indicator.
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HPLC columns, Purospher® STAR Phenyl
Supplier: Merck
Purospher® STAR Phenyl HPLC columns show an enhanced selectivity compared to standard alkyl phases. They are the first alternative to RP-8 or RP-18 selectivities for separation of aromatic compounds, fatty acids, purines and pyrimidines due to π-π interactions. The new Purospher® STAR Phenyl columns are based on high purity silica particles providing symmetrical peaks for basic compounds, high stability and excellent reproducibility.
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Gram color staining kit modified for Gram staining phenol-free, Sigma-Aldrich®
Supplier: Merck
Phenol-free staining kit for the Gram staining method
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Silica gels for TLC and PLC plates, standardised
Supplier: Merck
Selection of standardised and modified silica gels that are available in many granulations and supplied from one single source, dedicated to chromatography. Standardised silica gels are widely used in separation processes to purify valuable compounds in ton quantities.
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Contact slides SDX, yeasts and moulds, HYCON®
Supplier: Merck
Sabouraud dextrose agar with modified Pharmacopoeia formulation for the determination of yeast and moulds.
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HPLC columns, SUPELCOSIL™, Suplex™ pKb-100, Supelco®
Supplier: Merck
Suplex pKb-100 columns feature the same bonded phase functionality as SUPELCOSIL LC-ABZ columns. These specially deactivated columns differ in that Suplex pKb-100 is not endcapped, while SUPELCOSIL LC-ABZ is endcapped. The absence of the end-capping reagent results in better performance from Suplex pKb-100 for the strongest basic compounds, while LC-ABZ is preferred when the sample also contains acids and/or zwitterions.
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Micro particles based on melamine resin, carboxylate-modified FITC-marked, analytical standard, Supelco®
Supplier: Merck
Aqueous suspension, 2,5% solids, Particle size: 3 µm, Accuracy: std dev <0,2 µm, Analytical standard
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May Grunwald's eosin-methylene blue modified solution stain for hematology, for cytology, Sigma-Aldrich®
Supplier: Merck
Used to stain blood, bone marrow smears, and clinical cytological specimens
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Milli-Q® SR 240 Purification System
Supplier: Merck
The Milli-Q® SR 240 water purification system delivers pure reverse osmosis (RO) water to a mobile SQ Switch 3,5 L tank. This tank is easily transferred to the Milli-Q® SQ 200 Purification System to produce fresh ultrapure water anywhere in the lab. Thanks to the mobile SQ Switch tank, this water system adapts to any lab configuration: the RO water production unit is placed next to a potable water source, while unlimited ultrapure dispensing modules can be positioned anywhere in the lab or building with an electrical outlet. This allows for a flexible installation that can be easily adapted and scaled according to changing lab requirements.
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RajHans ChromoSelect medium, modified suitable for microbiology, NutriSelect® Plus, Millipore®
Supplier: Merck
RajHans ChromoSelect Medium is recommended for identification and differentiation of Salmonella species from the members of Enterobacteriaceae, especially Proteus species.
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Polystyrene-block-polybutadiene-block-polystyrene 30% (as styren), Sigma-Aldrich®
Supplier: Merck
Component of hot melt adhesives, sealants, asphalt and oil gels. Modifier for polymers, thermosets and general rubber compounding. Direct molded or extruded auto parts, sporting goods, footware and film.
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Dulbecco’s phosphate buffered saline (DPBS), Sigma-Aldrich®
Supplier: Merck
Dulbecco’s phosphate buffered saline is modified with/without calcium chloride and magnesium chloride, liquid, sterile-filtered, suitable for cell culture.
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Cell culture media, Dulbecco’s modified eagle’s medium (DMEM), high glucose
Supplier: Merck
Dulbecco′s modified eagle′s medium (DMEM) is a modification of basal medium eagle (BME) that contains four-fold concentrations of the amino acids and vitamins.
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GC Stationary Phase, phase OV-1, bottle of 10 g 1 * 1 Each
Supplier: Merck
GC Stationary Phase, phase OV-1, bottle of 10 g 1 * 1 Each
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Purospher® STAR RP-8 HPLC Columns, Endcapped
Supplier: Merck
Purospher® STAR RP-8 endcapped, like Purospher® STAR RP-18 endcapped, is based on high purity silica and has an almost complete surface coverage. Thus, Purospher® STAR RP-8 provides excellent peak symmetry for acidic, basic and even chelating compounds, highest column efficiency in terms of the number of theoretical plates, and exceptional stability from pH 1,5 to 10,5. In addition, they are ideal for a wide range of applications. As the sorbent is less hydrophobic than Purospher® STAR RP-18 endcapped, analytes will typically elute faster on the C8 phase. Purospher® STAR RP-8 endcapped provides enhanced selectivity for positional isomers and symmetrical peak shapes for strongly basic and less hydrophobic compounds.
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Milli-Q® SR 240L Purification System
Supplier: Merck
The Milli-Q® SR 240L water purification system delivers pure reverse osmosis (RO) water to two mobile SQ Switch 3,5 L tanks.
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GC Stationary Phase, phase OV-101, bottle of 20 g 1 * 1 Each
Supplier: Merck
GC Stationary Phase, phase OV-101, bottle of 20 g 1 * 1 Each
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GC Stationary Phase, phase Carbowax 20M, bottle of 50 g 1 * 1 Each
Supplier: Merck
GC Stationary Phase, phase Carbowax 20M, bottle of 50 g 1 * 1 Each
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GC Stationary Phase, phase Carbowax 1540, pkg of 50 g 1 * 1 Each
Supplier: Merck
GC Stationary Phase, phase Carbowax 1540, pkg of 50 g 1 * 1 Each
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GC Stationary Phase, phase SE-54, bottle of 50 g 1 * 1 Each
Supplier: Merck
GC Stationary Phase, phase SE-54, bottle of 50 g 1 * 1 Each
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Test strips, molybdenum, MQuant®, Supelco®
Supplier: Merck
MQuant® (MQ) test strips can be considered as a mobile laboratory on a few square millimeters of plastic strip. As a screening method they provide the user with a rapid overview of the situation, which helps in making the choice of what, and perhaps if, further analysis is required, thereby leading to potentially substantial savings in time and analytical resources. The strip is a biologically-degradable polyester foil and the low reagent content, in the reaction zones, assists problem-free waste disposal.
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Test strips for copper, MQuant®, Supelco®
Supplier: Merck
MQuant® (MQ) test strips can be considered as a mobile laboratory on a few square millimeters of plastic strip. As a screening method they provide the user with a rapid overview of the situation, which helps in making the choice of what, and perhaps if, further analysis is required, thereby leading to potentially substantial savings in time and analytical resources. The strip is a biologically-degradable polyester foil and the low reagent content, in the reaction zones, assists problem-free waste disposal.
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Supelco® TraceCERT® Organic Reference Standard, Tebufenpyrad
Supplier: Merck
Profenofos CRM may also be used as given below: Evaluation of 250 pesticide residues extracted by QuEChERS method from 103 processed fruit samples using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS. Gas chromatography-tandem mass spectrometry (GC-MS/MS) based analysis of 213 pesticide residues in soybean after their extraction by QuEChERS procedure. Detection of 252 pesticides extracted from surface water samples by solid-phase extraction (SPE) using liquid chromatography quadrupole-orbitrap high-resolution tandem mass spectrometry. Multi-residue analysis of 160 multiclass pesticides using ethyl acetate (EtAC)/n. hexane mixture for extraction from chamomile thyme and marjoram samples and their analysis by gas chromatography-tandem mass spectrometry (GC-MS/MS). Simultaneous determination of 34 pesticides in various environmental water samples by dispersive liquid-liquid microextraction (DLLME) technique in combination with gas chromatography-mass spectrometry(GC-MS/MS). Quantitation of 40 multi-class insecticides and fungicides in 81 apple samples by using gas- and liquid- chromatography-mass following a QuEChERS-based extraction.
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Test strips for peracetic acid, MQuant®, Supelco®
Supplier: Merck
MQuant® (MQ) test strips can be considered as a mobile laboratory on a few square millimeters of plastic strip. As a screening method they provide the user with a rapid overview of the situation, which helps in making the choice of what, and perhaps if, further analysis is required, thereby leading to potentially substantial savings in time and analytical resources. The strip is a biologically-degradable polyester foil and the low reagent content, in the reaction zones, assists problem-free waste disposal.
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Test strips for carbonate hardness, MQuant®, Supelco®
Supplier: Merck
MQuant® (MQ) test strips can be considered as a mobile laboratory on a few square millimeters of plastic strip. As a screening method they provide the user with a rapid overview of the situation, which helps in making the choice of what, and perhaps if, further analysis is required, thereby leading to potentially substantial savings in time and analytical resources. The strip is a biologically-degradable polyester foil and the low reagent content, in the reaction zones, assists problem-free waste disposal.
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Test strips, nitrite, MQuant®, Supelco®
Supplier: Merck
MQuant® (MQ) test strips can be considered as a mobile laboratory on a few square millimeters of plastic strip. As a screening method they provide the user with a rapid overview of the situation, which helps in making the choice of what, and perhaps if, further analysis is required, thereby leading to potentially substantial savings in time and analytical resources. The strip is a biologically-degradable polyester foil and the low reagent content, in the reaction zones, assists problem-free waste disposal.
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Cell Culture Media, Powdered, Dulbecco's Modified Eagles Medium (DMEM), Low Glucose, Sigma-Aldrich®
Supplier: Merck
Cell culture media, Dulbecco's MEM/low glucose, 50 l, Powder
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Test strips for arsenic, MQuant®, Supelco®
Supplier: Merck
MQuant® (MQ) test strips can be considered as a mobile laboratory on a few square millimeters of plastic strip. As a screening method they provide the user with a rapid overview of the situation, which helps in making the choice of what, and perhaps if, further analysis is required, thereby leading to potentially substantial savings in time and analytical resources. The strip is a biologically-degradable polyester foil and the low reagent content, in the reaction zones, assists problem-free waste disposal.