Angene
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Angene hat es sich zur Aufgabe gemacht, hochwertige Chemikalien für den Einsatz in Forschung und Entwicklung sowie für die kommerzielle Herstellung zu liefern. Angene bietet über 100.000 Produkte an, darunter Laborreagenzien, Building Blocks, Intermediates, Bulkware, Agrochemikalien, natürliche Inhaltsstoffe und pharmazeutische Wirkstoffe (APIs). Zusätzlich zu den über 100.000 Produkten bietet Angene die Auftragssynthese von Chemikalien an, die nicht im Handel erhältlich sind.
Website: www.angenechemical.com |
![Formaldehyde for histology](https://www.clinisciences.com/de/upload/thumbs/ihc-x9aax7-dbb4e6.png)
Formaldehyde for histology
Formaldehyde (CH2O) is the only gaseous aldehyde. It is dissolved in water with a saturation of 37 to 40%. This solution is generally referred to as "formaldehyde" or "formaldehyde solution". For this purpose, this concentrated solution is used by diluting it with water or buffer (usually 1/10), then 10% formalin solution, which in fact contains 4% formaldehyde, an ideal concentration for fixing. It is also possible to use paraformaldehyde which is in the form of a powder, this compound being the highly polymerized form of formaldehyde. Paraformaldehyde makes it possible to prepare very pure solutions of formaldehyde and is particularly recommended for electron microscopy.
Formaldehyde is a fast-penetrating, slow-fixing fixative that is best suited for large pieces of tissue. Formaldehyde is a chemical fixative that reacts with side chains of proteins to form hydroxymethyl groups. The effects of formaldehyde are reversible by excess water.
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