Table of Contents TP 10643
- How to Use This Manual
- Record of Revisions
- Foreword
- Chapter 1 - Air Law, The Clean Aircraft Concept
- Chapter 2 - Theory and Aircraft Performance
- Chapter 3 - Deicing/Anti-icing Fluids
- Chapter 4 - Preventative Measures and Deicing Procedures
- Chapter 5 - Ground Crew Supplement
- Chapter 6 - Aircraft Critical Surface Contamination Examination Questions
- List of Tables
- Acronyms
- Glossary
Refractometer Use in Determining a Glycol Based Fluid's Freezing Point
26. The freezing point can be measured directly, using a method such as ASTM D 1177, however, this method is cumbersome for use in the field. The freezing point of fluids can be easily monitored in the field by measuring their refraction. The magnitude of the refraction is related to the concentration of glycol contained in the solution and therefore to the fluid freezing point.
27. The fluid manufacturers should be consulted for further operational information on the procurement and the training required for refractometer use in the field.