Field stain A
- Methylene blue 0.80 g
- Azur 1 0.50 g
- Na2HPO4 5.00 g
- KH2PO4 6.25 g
- Distilled water 500 ml
Procedure
- Dissolve salts in hot distilled water;
- Let cool and add stains;
- Let stand for 24 hours;
-
Filter over blotting paper;
- Store at room temperature out of the sunlight.
Stable for about 12 months.
Ready to use Field solution A is commercially available.