1. Why is it important to control the moisture in your processes?
A. Excess moisture in machines can cause rust
B. Moisture can make it nearly impossible to produce good parts.
C. Moisture around processing equipment is a safety hazard.
D. Moisture slows the drying time for plastic parts.

2. How do you remove excess moisture from your plastic resin?
A. Blowing extremely hot air over the resin.
B. An industrial strength heater set at 1000°F or higher.
C. Using a hot air desiccant dryer.
D. Lay your resin out in the sun for 8 - 10 hours.

3. What effect does excess moisture have on plastic processing?
A. Moisture degrades the molecular make up of the plastic.
B. Plastic chemically bonds to the moisture creating a toxic mix.
C. The moisture in the air causes bubbling of the plastic.
D. Cause the machine to run slower cycles during the night shifts.

4. What is desiccant?
A. A sand-like material used to sift moisture out of plastic.
B. An intelligent membrane that mechanically separates plastic from moisture.
C. A porous spherical pellet that absorbs moisture from air.
D. A fancy name for an industrial fan used to dry plastic polymers.

5. How often should you replace your desiccant?
A. At the end of every work day.
B. Monthly.
C. Every 6 - 8 weeks.
D. Once a year, typically in the spring.

6. Where can you purchase high-quality, economically priced desiccant?
A. A local hardware store.
B. Call PS&E at 800-637-1033 or visit www.plasticservices.com
C. Any automotive parts dealer should carry it.
D. Desiccant is available only from the OEM

7. What types of desiccant are available from PS&E?
A. Alumina Triglycerite
B. Molecular Sieve Type 13X and 4A.
C. Porous Clay
D. Silica Gel Type 41XB

8. Can desiccant be regenerated?
A. Yes, but only if you set it out in the sun on a hot day in July.
B. No, once it collects moisture it must be disposed of properly.
C. Yes, by purging at high temperatures between 400 - 600°F
D. No, but it makes a nice ground cover for landscaping.

9. What are the most common types of hygroscopic plastics?
A. Nylon, Polycarbonate, and Polyethylene Teraphthalate
B. Polyethylene, Carbon, and Cellulose
C. Polystyrene, Nylon, and Polyester
D. Polycarbonate, Nylon, and Polyurethane

10. Only one of these processing problems is NOT caused by moisture.
A. Silver Streaking
B. Drooling
C. Material Degradation
D. Short Shots