Drug testing is simplified

For modelling chemical interaction, lead screws enable minute doses to be accurately delivered down to 0.4 micro l

An advanced technique for assessing new drugs will now be a lot easier thanks to a new instrument developed by Sirius. The analyser, known as the GLpKa, has been developed as a fast, automated and intelligent system which uses titration to help predict bio-availability, an indication of the drug’s effectiveness.

In operation, GLpKa relies on five Kerk lead screws from Huco to drive each of five precision glass syringes. Under software control, a stepper motor increments the lead screw nut by one 24th of a turn at each step, enabling minute doses to be accurately delivered down to 0.4 micro l. Huco was asked to assemble the complete dispenser mechanism.

Designed specifically for motion control applications, the lead screw’s special thread form offers quiet operation and compatibility with Kerk’s patented anti-backlash nut.

The nut features a low drag torque and is not subject to premature wear and problems with varying loads.

Huco Engineering Industries Tel: 01992 509888