PROPIPETTES Safety Pipette Filler The new "PROPIPETTE" eliminates the. dangerous practice of usins the mouth to draw liquids into pipettes. They are simple to use and the operator quickly becomes proficient so that the liquids can be delivered quickly, precisely and safely. Measurement precision is extremely high—0.01 ce. The instrument has three agate-ball valves which operate independently and the entire procedure can be done entirely with one hand.
-«&
APPLICATIONS: Transferring corrosive, toxic, infectious, ill-smelling liquids such as acids, alkalies, cyanides, sulphides, bacteriological cultures, chloroform, ether, urine, blood, excrements, dyes etc. Skimming off with precision minute quantities of liquid floating above a sediment without danger of mixing, as in serum from red blood cor puscles and micro-analysis. Skimming off and measuring the liquid floating above a chemical pre cipitate. Transferring sterile samples of liquids to other tubes and containers. Transferring radioactive solutions Cat. No. A-77990—Price $6.90 each
All laboratory pipettes from the smallest to those exceeding 50 cc can be used with PROPIPETTESSafety Pipette " Filler. Easy to Operate
STEP T W O STEP O N E Press on agate valve Press on agate valve " S " Ά " and squeeze bulb which draws liquid to the to expel air and create a desired level. vacuum.
STANDARD Supply Corp.
STEP THREE Press on agate valve " E " to expel liquid. To de liver the last drop, cover air inlet in front of " E " , press " E " and squeeze the small bulb on the side.
SCIENTIFIC
lAtORATOBV APPAHAtUi tEAGENTS AND CHEMICALS
808 BROADWAY NEW YORK 3 , N Y
Circle No. 116 on Readers' Service Card
•iv^Kfl'
ÔÎASS? Blaisdell markers H do the trick
from plan to working lab...overn/ghf with
irïtjrc^an>jep.bie
N O W — f r o m pny point i n the country—you can order STEELAB quality equipment right off-theshelf f o r immediate delivery. This means that you can set up a n operating l a b . . . exactly to your liking, floor plan a n d budget . . . virtually overnight.
LABORATORY MARKER Four brilliant colors. Withstands temperatures up to 300°C.
DU-ALL MECHANICAL
PENCIL
Convenient propel-repel action. j 8 brilliant, all purpose leads with •• barrels to match. $
H U N D R E D S OF C O M B I N A T I O N S TO CUSTOM-FIT ANY LAB
P^^flioif^ffl CABINETS · SINKS · TABLES · FUME H O O D S DESKS · FIXTURES A N D ACCESSORIES immediate Delivery from Warehousing Distributors Braun Chemical Company Harshaw Scientific Braun-Knecht-Heimccnn Co. Arthur S. La Pine & Co. Scientific Supplies Co. plus Field Representatives listed in your classified directory
LABORATORY MINEOLA,
Write or Call Today for FREE Catalog No. W8-A and "Module Planning Kit"
FURNITURE
LONG ISLAND, N E W YORK Since / 920 - Over
50,000
CO., INC.
· PHONE: PIONEER
2-3600
AT BETTER STATIONERS
EVERYWHERE
Test the marker that suits your needs. Send for sample naming this publication.
blaisdell '
PENCIL COMPANY BETHAYRES, PA.
Installations Circle Nos. 36-1, 36-2 on Readers' Service Card
126 A
·
Circle No. 1 on Readers' Service Card ANALYTICAL CHEMISTRY
