"Merck"
n-Pentane ≥99.8%, SupraSolv® for GC-ECD/FID, Supelco®
Supplier: Merck
n-Pentane ≥99.8%, SupraSolv® for GC-ECD/FID, Supelco®
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Dichloromethane ≥99.8% stabilised, Suprasolv® hypergrade for GC-ECD/FID, Supelco®
Supplier: Merck
SupraSolv® ECD and FID is specially developed for gas chromatography in combination with ECD (Electron Capture Detetor) and FID (Flame Ionisation Detector). SupraSolv® solvents offer the largest specified retention time range, a clear baseline and a minimal signal-to-noise ratio leading to reliable and reproducible analysis results.
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N,N-Dimethylformamide, SupraSolv® for gas chromatography, Supelco®
Supplier: Merck
N,N-Dimethylformamide, SupraSolv® for gas chromatography, Supelco®
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Dehydrated culture media, TOS-propionate agar (base)
Supplier: Merck
In combination with the selective supplement Lithium-Mupirocin (MUP) the TOS Propionate agar allows the direct detection of viable bifidobacteria in starter cultures and various milk products like fermented and unfermented milk, milk powder and baby food. The growth of other lactic acid bacteria is very much inhibited so that a confirmation of presumptive bifodobacteria is in most cases not necessary.
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Sodium dodecyl sulphate (SDS), Millipore®
Supplier: Merck
Sodium dodecyl sulphate (SDS), Millipore®
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4-Chlorobenzaldehyde for synthesis, Sigma-Aldrich®
Supplier: Merck
4-Chlorobenzaldehyde for synthesis, Sigma-Aldrich®
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2'-Nitroacetanilide for synthesis, Sigma-Aldrich®
Supplier: Merck
2'-Nitroacetanilide for synthesis, Sigma-Aldrich®
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Mercury (II) oxide, red for analysis, Supelco®
Supplier: Merck
Mercury (II) oxide, red for analysis, Supelco®
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Ninhydrin solution in 2-propanol, spray reagent for TLC, Supelco®
Supplier: Merck
Ready-to-use spray solution with 2-propanol solvent.
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Standards for spectrophotometer calibration, Supelco®
Supplier: Merck
Standard solutions are used for the calibration of spectrophotometers.
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Formamide, EMSURE® for analysis, Supelco®
Supplier: Merck
Formamide, EMSURE® for analysis, Supelco®
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di-Potassium hydrogen phosphate, anhydrous ≥99.99% (metals basis), Suprapur® for trace analysis, Supelco®
Supplier: Merck
, anhydrous ≥99.99% (metals basis), Suprapur® for trace analysis, Supelco®
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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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Isobutyric acid for synthesis, Sigma-Aldrich®
Supplier: Merck
Isobutyric acid for synthesis, Sigma-Aldrich®
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#: 20864.320
: VWR Chemicals
#: 83640.320
: VWR Chemicals
#: 31770.294
: VWR Chemicals
#: 83645.320
: VWR Chemicals