The Manual Injector is a manual syringe driver for pneumatic or hydraulic control of injection needles or holding pipettes. It is suitable for injecting volumes in the nanoliter to microliter range. It is also widely used as a fluid control device for IVF applications requiring sensitive manual control of the displacement of microneedle contents.

The system is constructed from the highest quality parts.  The base assembly is black anodized aluminum.  A non-rotating Mitutoyo micrometer provides the drive to the gas-tight syringe¹.  

A precision 3-way valve provides a convenient method for filling the fluid line and clearing air bubbles from the line.  Teflon tubing, chromatography connectors and a pipette holder complete the system.

The injection resolution is dependent on the volume of the syringe that is installed, as outlined in the following table.  For example, with a 25µl syringe installed, one complete rotation of the micrometer  (25 divisions)  yields a displacement equivalent to a volume of 267nl and turning the micrometer one division (0.001") yields 10.6 nl.

 
 Syringe volume                   Volume per revolution                    Volume per division
            10µl                                      106nl                                                 4.2nl
            25µl                                      267nl                                                10.6nl
            50µl                                      529nl                                                21.2nl
           100µl                                     1.06µl                                               42.3nl
           250µl                                     2.65µl                                              105.8nl
           500µl                                     5.29µl                                              211.7nl
          1000µl                                   10.58µl                                              423.4nl