I – Chlorinated solvents as washing agents

Introduction
Chlorinated solvents and related problems
Chloroethanes
Chloroethylenes
Chloromethanes
Cleaning Processes
Ultrasound degreasing
Main features
Precautions
Thermal decomposition
Evaporation
Storage
Distillation
Regenerated solvents
Checks
Toxicity
Production control

II – Related problems

Production and utilisation of tips for ball-point pens
Writing blocking
Metal enrichment into the ink in contact with brass parts
Nature of clots thats obstruct duct in ball pen tips
Verification of results and conclusions

III – Photographic examination

Photographic