36988 Resultados para: "Merck"

Supplier: Merck

Hidracinio hidrato ≥80% en solución acuosa para síntesis, Sigma-Aldrich®

Supplier: Merck

Hidracinio hidróxido ≥99% para síntesis

Supplier: Merck

All Spectroquant® test kits can be used with the Prove range of spectrophotometers and Nova 60/60A instruments. Tests can be used not only on photometers and spectrophotometer from Merck, but also on photometers and spectrophotometers from other suppliers (programming details available on request). Spectroquant® cell test kits.

Supplier: Merck

di-Sodio L(+)-tartrato dihidrato, EMSURE® para análisis, Supelco®

Supplier: Merck

1,2,4-Triclorobenceno para síntesis, Sigma-Aldrich®

Supplier: Merck

Chemizorb® Mercurio, kit completo para la eliminación completa y segura de gotas de mercurio y otras trazas de mercurio elemental; incluye reactivos y agentes auxiliares.

Supplier: Merck

1-Cloro-2-metilpropano para síntesis, Sigma-Aldrich®

Supplier: Merck

Methylmagnesium chloride 20% in THF para síntesis, Sigma-Aldrich®

Supplier: Merck

di-Amonio oxalato monohidrato, Supelco®

Supplier: Merck

Sulfato de 8-quinolinol monohidrato, Sigma-Aldrich®

Supplier: Merck

Aluminio hidróxido, en polvo fino

Supplier: Merck

Disulfuro de di-terc-butilo para síntesis, Sigma-Aldrich®

Supplier: Merck

3-Bromo-1-propanol para síntesis, Sigma-Aldrich®

Supplier: Merck

Benzaldehído-oxima, Sigma-Aldrich®

Supplier: Merck

5-Isopropil-2-metilfenol, Sigma-Aldrich®

Supplier: Merck

n-Decano para síntesis, Sigma-Aldrich®

Supplier: Merck

2,2-Dietoxipropano estabilizado para síntesis, Sigma-Aldrich®

Supplier: Merck

EHEC is capable of inducing life threatening illnesses, particularly in people with immune deficiency, young children and the elderly. Although the most common cause of EHEC is E. coli O157, other serotypes, such as O26, O45, O103, O111, O121 and O145, are also relatively frequent causes of infection. Typical symptoms are severe abdominal pain and diarrhoea, which is initially watery but often becomes bloody. E. coli are gram-negative, non sporulating, facultative anaerobic bacilli. Amongst the pathogenic E. coli, Verotoxin-forming strains (STEC or VTEC) have gained importance in recent years. The group of enterohaemorrhagic E. coli (EHEC) with its highly pathogenic serovar O157:H7 strain is particularly interesting in this respect. The main sources of infection are contaminated, raw or insufficiently heated foods of animal origin, such as meat and dairy products. The reservoir for EHEC is the gut of ruminants. Microorganisms can enter food during the processing of meat and dairy products if hygienic conditions are inadequate. The drastic increase in the incidence of food contamination caused by E. coli O157 demands reliable and rapid methods of detection. Innovative, rapid tests make screening for pathogenic organisms easier. Complete test sets for the detection of pathogens and toxins. The one-step format reduces the possibility of errors during handling. In addition to tests for the most common cause of infection, E. coli O157, there exits a 24-H screening protocol for VTEC, including E. coli O104:H4, based on Rapidcult™ E. coli enrichment combined with detection using Duopath® Verotoxins.

Supplier: Merck

N,N,N',N'-Tetramethylsuccinyldiamide para síntesis

Supplier: Merck

2-(Allylthio)-2-thiazoline para síntesis, Sigma-Aldrich®

Supplier: Merck

Silicagel 1 - 4 mm agente desecante, with moisture indicator (brown gel), Supelco®

Supplier: Merck

1,5-Pentanodiol para síntesis, Sigma-Aldrich®

Supplier: Merck

Pirazina para síntesis, Sigma-Aldrich®

Supplier: Merck

Mercurio (II) sulfato, extra puro, Supelco®

Supplier: Merck

3,3,5-Trimetilciclohexanol para síntesis, Sigma-Aldrich®

Supplier: Merck

Difluoruro de xenon para síntesis, Sigma-Aldrich®

Supplier: Merck

Polietilenglicol 35.000 estabilizado para síntesis pH 5 - 7 (100 g/l, H₂O, 20 °C), Sigma-Aldrich®

Supplier: Merck

Trientina (Mezcla de isómeros) ≥95% para síntesis, Sigma-Aldrich®

Supplier: Merck

2-(Trimetilsilil)tiazol

Supplier: Merck

Diyodometano para síntesis, Sigma-Aldrich®