Nov 11, 2024 · Label the bottle Field stain B, and also write the date. What is the staining Procedure for Field Stains A and B? Fill up two Coplin jars or wide-mouth bottles: Field Stain A (Blue stain). Field Stain B (Red stain). Make a blood smear on a clean glass slide, and it is dried in the air. Fix in methanol for one minute or get Spray ‘Easyfix’.