38A
ANALYTICAL
N E W improved
CHEMISTRY
FOR BETTER pH
Control
SPECIFIC GRAVITY BALANCE
there is nothing like
NON-FADING GLASS COLOR STANDARDS
Permanent reliability of Hellige Glass Color Stand ards, accuracy of color comparison, simplicity of the technique, and compactness of the apparatus are exclusive features of Hellige Comparators not found in any similar outfits.
FEATURES
Knob controlled Beam Arrest Knob controlled Vernier Leveling screws No loose weights Sensitive to 0.0001
WRITE FOR BULLETIN No. 602
Η Ε L LI GE INCORPORATΕD 3718 NORTHERN BLVD.. LONG ISLAND C I T Y 1. N.Y.
3 DISTINCT USES For specific gravity of
liquids
When erected as shown above, the specific gravity of liquids may be read directly to the fourth decimal place. one roller type rider is required.
No calculations are necessary.
Only
The chain is worked by a knob offering
convenient operation and precise control.
The base is equipped with level
ing screws and a spirit level.
2
For specific gravity of solids
A f t e r substitution o f t h e plummet with the slotted basket, four quick easy weighings furnish a l l the d a t a t o determine the specific g r a v i t y o f a n y solid.
necessary
With water-
soluble solids, other liquids such as benzene o r petroleum
NEW L O W PRICES O N RUBBER TUBING . . . from The House of NALGE On orders of 100 ft., we give 7 ' / 2 % discount from list prices. Other quantity discounts on request. NALGE tubing is 1 0 0 % pure gum rubber designed especially for laboratory use. Soft, pliable and will not d e teriorate or harden. A sélection of NALGE top quality #1016 tubing.
may b e used.
3
As a chain
balance
A bow pan is available at slight extra cost to convert the balance into one for weighings of not more than 20 grams with a sensitivity of 10 milligrams. A 4 - 0 1 2 Specific gravity balance for liquids and solids, as described above, $140.00 A 4 - 0 1 4 Bow pan for converting balance.to chainomatic type 7.50
ID.
Wall
•A"
Vis"
Price per 100 ft. $12.80
Vs"
3/32"
18.50
Vis"
Vs"
16.50
Vs"
Vs"
23.65
3/4"
Ά"
31.00
V4"
Vu"
25.00
Mail coupon for complete price list of supplies.
IMMEDIATE DELIVERY
Ε. MACHLETT & SON 220 EAST 23RD STREET
·
Supplies
THE N A L G E
AMERICA'S GREATEST IN-STOCK
· Chemicals
NEW YORK 10, Ν. Υ.
COMPANY
265 S. Geodman St., Rochester 7, Ν. Υ. Name
ESTABLISHED 1897
Laboratory Apparatus
from
SELECTION
Address
