CPK Atomic Models, Screw for Amine Cap Accessory
Used to connect the 67-7112 Amine Cap to the 67-6726 Hydrogen H-Bond, Hook Type when the hook is removed.
This screw is used to connect the 67-7112 Amine Cap to the 67-6726 Hydrogen H-Bond, Hook Type when the hook is removed.
Assembling or Taking Apart CPK Atomic Models is Easy
A Connector Link is placed in the well on the end of the handle of the 67-7120 Construction Tool. The Connector Link is then pressed into the female socket of the atom. The second atom is simply pressed onto the first with a slight twist, and the bond is made.
To remove a Connector Link, the forked end of the 67-7120 Construction Tool is slipped around the center groove of the link, and the tool is pried upward.
The atoms are held together with great tenacity. A force of 5 to 7 kg is required to separate them. This force is readily furnished by the levering blade of the 67-7120 Construction Tool.
The marked superiority of the CPK® Atomic Models derives largely from Dr. Koltun’s Connector Links. His analysis of the engineering problems involved led him to combine new plastic materials with innovative link designs which satisfy four critical requirements simultaneously.
Since bond distances and angles for particular atoms are known to vary even in similar structures, two special links, in addition to the standard link, are provided to increase or decrease the normal bond distance by +0.08Å or -0.05Å.
A special ‘gluing’ link is also available for permanently connecting atoms at standard bond distances.
The various link types are color-coded to aid identification.