34 A
ANALΥΤΙCAL
CHEMISΤRY
International Clinical Centrifuges
Announcing
HAAK - Model E
414—With 4 place head for 15 ml. tubes
GLASSBLOWING BURNER
416—With 4 place head for 2x15 ml. and 2 χ 50 ml. tubes
Answers Every Gldssblowing Need:
417—With 4 place head for 50 ml. tubes •
PATENT APPLIED FOR
DELIVERY FROM STOCK
• Write Dept. AC or p h o n e SHerwood 2-1123 for complete information.
GENERAL
LABORATORY SUPPLY COMPANY
• Handles all pyrex tubing to 100mm—quartz to 35mm. • Silent operation. • More economical on oxygen and gas. • Uses any illuminating gas without a booster. • Has only two valves to operate—adaptable to foot operation. • Priced at only $53.50.
SEND FOR LITERATURE
W. H. HAAK
^PttÔMPT DELIVERY
320 MARKET STREET, PATERSON 3, NEW JERSEY
BROOKFIfLD, ILL.
3333 GRAND BLVD.
"Apparatus and Chemicals for Industry and Science"
a NEW way makes better, more Τ10/30
INTER-JOINT
accurate
Thermometers
J-2304 PORCELAIN SCALE made of PYREX brand glass A new patented (U. S. Pat. N o . 2,475,431) If you prefer porcelain scale method of construction—exclusive with Scithermometers, our J-2304 style entific Glass—makes these interchangeable will meet every comparative joint laboratory thermometers more accutest. Because they are made of rate under all varying conditions of use. P Y R E X b r a n d glass throughThis new way results in a straight uniform out, they withstand thermal bore through the joint. The old way usually shock t h a t no other thermometer produces a zig-zag bore, often with enlarged can take. T h e mercury column areas that act as expansion chambers. is always easy to read against Such unwanted chambers can cause large the white porcelain scale. E n errors in readings due to varying tempergraved lines are fine, sharp and atures in and around the joint. The new clear. A cemented-on brass cap way also eliminates constrictions which seals o u t dirt and moisture. Jslow the response to temperature change. 2304 thermometers cost little J-2300B thermometers are now made of yelmore t h a n less s t u r d y types. low back glass, easier to read. For accuracy All popular stem lengths are under all conditions depend on SGA Interavailable in all ranges. A com- ' Joint Thermometers! They're available in plete price list will be sent on all stem lengths from 1 to 18 inches, in all request. popular ranges, and still at 1942 prices! ALL TYPES OF THERMOMETERS Write for price list J-2300B today! J-2300B CARRIED IN STOCK J-2304 J - 2 3 0 0 B ENGRAVED STEM-YELLOW BACK m a d e of normal glass
SCIENTIFIC GLASS APPARATUS CO.JNC. BLOOMFIEID - NEW JERSEY LABORATORY APPARATUS - INSTRUMENTS - CHEMICALS - GLASSWARE
