Types of Fixative

Question 1

Formaldehyde Types

Answer 1

1. 10% Formalin
2. 10% Formol-saline
3. 10% Neutral Buffered Formalin
4. Formol corrosive / Formol sublimate
5. Alcoholic Formalin / Gendre’s

Question 2

Mercuric Chloride Fixatives

Answer 2

1. Mercuric Chloride
2. Zenker’s Fluid
3. Zenker’s Formol (Helly’s Fluid)
4. Heidenhain’s Susa
5. Schaudinn’s, Ohlmacher’s Carnoy-Lebrun soln

Zinc Sulfate : alternative for mercuric chloride

Question 3

Chromate Fixatives

Answer 3

1. Chromic Acid
2. Potassium dichromate
3. Regaud’s (Moller’s fluid)
4. Orth’s Fluid

Question 4

Picric Acid Fixatives

Answer 4

1. Bouin’s soln
2. Brasil’s Alcoholic Picformol
3. Hollande’s soln

Question 5

Alcohol Fixatives

Answer 5

1. Methyl alcohol (100%)
2. Isopropyl (95%)
3. Ethyl Alcohol (70-100%)
4. Carnoy’s
5. Newcomer’s
6. Rossman’s soln
7. Methacarn, Clarke’s soln

Question 6

Microanatomical Fixatives

Answer 6

10% formol saline
10% neutral buffered formalin
Formol sublimate / formol corrosive
Heidenhain’s Susa
Zenker’s
Bouin’s
Brasil’s

Question 7

Nuclear Fixatives

Answer 7

Carnoy’s
Bouin’s
Newcomer’s
Heidenhain’s Susa

Flemming’s soln

Question 8

Cytoplasmic Fixatives

Answer 8

Formalin with post chroming
Orth’s Fluid
Moller’s (Regaud’s)
Helly’s Soln (Zenker-formol)

Flemming soln w/o AA

Question 9

Histochemical Fixatives

Answer 9

10% formol saline
Acetic Acid
Newcomer’s
Acetone

Question 10

Microanatomical Fixatives

Answer 10

❖ 10% formol saline
❖ 10% neutral buffered formalin
❖ Formol sublimate/formol corrosive
❖ Heidenhain’s Susa
❖ Zenker’s
❖ Bouin’s
❖ Brasil’s