1. Model 300D/TJE, manufactured by Sensotec, Inc., Columbus, Ohio.
2. Steels for Seamless Hydrogen Pressure Vessels
3. Model LP-241, manufactured by Isotope Products Laboratories, Burbank, California.
4. Model TRA510, manufactured by LeCroy Research Systems, Spring Valley, New York.
5. Model D-200-1200, manufactured by Engelhard Industries, Union, New Jersey.