No Glubs, Gurgles, Grumbles or Groans Proven DD-20 is our most silent vacuum pump ever.
to a variety of setups, quickly and precisely Work to a low 5 micron ultimate vacuum. The DD-20 gives you a full 10 liters/minute pumping efficiency even at 100 microns. It's 16 lbs. light and 10" χ 7%" x 614" small to carry wherever you need. Hear about our complete line of vacuum pumps. Write Precision Scientific, RO. Box 10066, Rochester, NY 14610. k Or call 800-621-8820.
Listen to the quiet at working pressure with the Precision® DD-20. Our internal baffle puts a lid on noise. An exhaust valve along with the baffle elimi nates oil back-up. Your system runs quiet and clean. Removable intake lets you adapt
CIRCLE 127 ON READER SERVICE CARD
Your Performance Demands Precision®
Precision" V A C U U M PUMP 20 l/m (0.7 C F M ) S Micron M O D E L OD 20
Precision® Scientific
IMEMBER
SAIUIA SCIENTIFIC APPARATUS MAKERS ASSOCIATION
