These are just a few of the ground joint flasks you can get in PYREX brand glass No. 7740
4496 If you use ground joint flasks, this number has meaning for you. It represents the number of ground joint flasks made of PYREX brand glass No. 7740 listed in our catalogs. Among these thousands, you will surely find the ones you need. In these flasks you get the work qualities
and endurance
of
PYREX
brand labware. You also get joints
ground to a "satin-smooth" finish, which eliminates leak-causing irregularities. This finish, ground to precise uniformity, is a result of extensive research in the fields of abrasives and grinding techniques. It gives you an easy fit without looseness. Uniformly fine grinding also gives you complete interchangeability of
ground joints. And in vacuum work, you need only a minimum of lubricant to get the tight seal you need. If you would like to look at the assortment of these long-lasting, superlatively made flasks, you'll find them listed in our new catalogs, LP36 for standard laboratory ware and CA-2 our special glassware catalog.
C O R N I N G GLASS WORKS 72-11 Crystal Street, Corning, N e w York
PYREX® laboratory ware . . . the tested tool of modern research Corning means research in Glass
Please send me a copy o f : C a t a l o g L P 3 6 — " L a b o r a t o r y G l a s s w a r e " • ; C a t a l o g C A - 2 — " C u s t o m - M a d e Laboratory Glassware b y C o r n i n g . " • Name
_
Title.
Company Street City
-Zone-
State..
For further information, circle numbers 13 A-1, 13 A-2 on Readers' Service Card, page 79 A
VOLUME
2 8, N O . 1 1 , N O V E M B E R 1 9 5 6
13 A
