V O L U M E 21, NO. 9, S E P T E M B E R
1949
5A
TODD SCIENTIFIC SPECIFICATIONS
PROTECT YOUR VACUUM PUMP against INTERNAL CORROSION and LOSS of VACUUM by using t h e
TODD UNIVERSAL ABSORPTION TRAP U. S. Patents 1,738,930 and 1,887,349
UNIVERSAL
ABSORPTION TRAP
completely
removes ACID
and
ALKALINE VAPORS, MOISTURE, etc. by means of a special a b sorbent of large capacity.
This TODD UNIVERSAL ABSORBENT
is a blend of highly efficient, self-indicating, chemical absorbents which may be regenerated several times.
The uniform physical
state of the absorbent causes no significant pressure drop through this trap. FREEZING TRAP removes CONDENSABLE VAPORS which would ordinarily be absorbed in the vacuum pump oil. SAFETY TRAP prevents liquids, foams, sublimation particles, etc., in chemical systems from being accidentally drawn into the vacuum pump. TODD UNIVERSAL ABSORPTION TRAP TODD
UNIVERSAL
ABSORPTION
shown includes the Pyrex
freezing trap and also the trap
packed
TRAP
brand
absorption
with the TODD
SAL ABSORBENT.
as
glass
UNIVER
Λ precision reground
vacuum tight standard taper joint con nects the 12".
two
traps
together.
Height
Stand, clamps, and Dewar flask
are not supplied.
Instructions for using
these traps, and other useful informa tion on the protection of vacuum pumps are included
The above typical laboratory set-up shows the TODD UNIVERSAL
ABSORPTION
TRAP
protecting
a
vacuum
REFILLS OF TODD
$19. UNIVERSAL ABSORBENT
for recharging trap
each $ 3 .
pump from absorbing moisture, condensable gases, cor rosive vapors, etc. evolved from a chemical system.
TODD SCIENTIFIC COMPANY Designers and manufacturers of special scientific laboratory apparatus.
S P R I N G F I E L D , PA.
