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Mann’s fluid

Mann’s fluid

Formula

Solution A

MaterialAmount
Distilled water100mL
Osmium tetroxide1g

Solution B

MaterialAmount
Distilled water100mL
Sodium chloride0.75g
Mercuric chlorideto saturation

Combine equal parts of solutions A and B just before use.

The working solution is stable for a few days.

Description

This solution is used for cytological components. Kiernan notes that it is suitable for the Golgi apparatus. It should fix fairly rapidly, a few to several hours, and should be washed afterwards to remove excess osmium tetroxide.

Safety Note

Prior to handling any chemical, consult the Safety Data Sheet (SDS) for proper handling and safety precautions.

References

  1. Kiernan, J.A.,
    Histological & Histochemical Methods, Ed. 3,
    Butterworth Heinemann, Oxford, UK.