We
put
® TM
.
tie
purr
in
stir
Try a Kontes stirrer assembly. Listen for the purr. Kontes heavy duty stirrers are made from extra heavy borosilicate stock to prevent shearing when mixing highly viscous liquids. Keyholes and blade ends are fire-polished. Bearings are precisely proportioned to shaft size to prevent whip action. Everything’s “just so.’’ But then you wouldn’t expect anything less from Kontes, would you? Make your selection from a com-
Some stirrers squeak or grind. Ours are practically noiseless. Why? Because we harp on details. We diamond hone our bearings to tolerances of .0003 of an inch to assure silken smooth operation—heralded by a soft, nearly noiseless purr. That's precision. All Kontes stirrers are made to precise tolerances, for easy interchangeeven when using glass ability shafts with steel bearings, or vice versa. Never a bind. .
ft
.
du Pont
plete line of stirrer accessories that include stainless steel assemblies, stuffing boxes, water cooled bearings, and Teflon® blades. Each designed to take the agitation out of your next stirring operation. Find these Kontes Stirrers among the other fine laboratory glassware items listed in the new Kontes Catalog. Write for your copy today.
KONTES Vineland, N.J. 08360 CIRCLE 117
Exclusive
Distributors:
KONTES
OF
ILLINOIS, KONTES
• Illinois KONTES OF CALIFORNIA, Evanston, CU.K.) LTD., Carnforth, England
San
Leandro,
(^5 "
ON READER SERVICE CARD California
