RVC/FAO guide to Veterinary Parasitology
Flotation fluids: General purpose
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1. Saturated salt solution

Specific gravity: 1.18 - 1.20

General purpose solution.


Sodium chloride: 400 grams
Water: 1000 ml

  • Stir thoroughly before use.
  • May distort eggs.

2. Salt/sugar solution

Specific gravity: 1.28

General purpose solution.

Sodium chloride: 400 grams
Water: 1000 ml
Sugar: 500 grams

Dissolve the salt in water to make a saturated solution.

Add the sugar to the saturated salt solution.

Stir until the sugar is dissolved.

3. Sodium nitrate

Specific gravity: 1.18

This solution is sometimes used for strongyle eggs.

Sodium nitrate: 400 grams
Water: 1000 ml

Add sodium nitrate to water while stirring.

  • May form crystals and distort eggs if left longer than 20 minutes.
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