Robotic Sample Processors

The Guardian SP series offer a unique combination of advanced liquid handling and software technology and are designed to automate the most demanding applications with both high performance and security

Guardian SP2



Features include:


   96 sample carousel with Barcode reading

   Disposable tip option

   4-nozzle probe option

   Advanced applications software environment

   Excellent pipetting accuracy and precision







Guardian SP Series

The Guardian SP series are the most advanced sample processor systems manufactured by HTZ. Both models (the SP1 and SP2) incorporate a variety of advanced technical features to enhance the flexibility of what are widely acknowledged as being amongst the most flexible and powerful robotic sample processors available.

The Guardian SP1 Plus and the larger Guardian SP2 Plus offer a range of accessories developed to match the exacting requirements of a wide variety of applications and to provide automation wherever liquids need to be processed with a high degree of accuracy and precision.

Guardian DT  


Configurations for any application

Both the SP1 and the SP2 can be equipped from the full range of accessories described so whatever the liquid handling task, there is a Guardian that can be configured to provide a cost effective and reliable solution to its automation. Typical applications include:

 Immunoassay (ELISA, RIA, EIA, LIA etc)
 Compliment Fixation tests (CFTs)
 Milk testing IFA Slide preparation
 Compound Distribution
 Plasma Pooling
 PCR sample preparation




The compact SP1 is the most suitable when bench space is more limited or wherever the total number of samples and containers being processed is small. With its 50% larger working platform the SP2 has a capacity for batches up to 18 microplates (or equivalent). Both systems can have either one or two probe drives, each one fitted with a choice of probe types. This provides the Guardian SP series with the maximum flexibility and minimum hardware complexity.


Complete Security

Guardian Security Rack

To achieve a secure audit trail from sample through to result, the Guardian SP series incorporate a number of options to capture the identifier information - from a simple, manually operated wedge reader to the automated Carousel Bar-code Reader used for positive identification of up to 96 samples in removable carousel magazines. Samples can be loaded rapidly and securely away from the instrument and then loaded onto the instrument in one operation. A separate Secondary Security Rack with integral bar-code reader is also available for total security with smaller numbers of samples and other containers. An integral bar-code reader is now availble in the arm to allow identification of items anywhere on the bed.

Advanced Sensing Technology

The first and perhaps the most critical step in automated liquid handling is often the accurate detection of the liquid surface. HTZ has developed a number of systems tailored to suit the differing requirements of individual applications. These include high sensitivity conductive, capacitative and pressure based sensing systems. The conductive sensor is suitable for most aqueous applications and is used in conjunction with a wide range of probe types and these have been optimised for use in immunoassay, blood grouping, milk testing etc. HTZ's capacitive sensing system is a uniquely sensitive device designed to detect non-ionic solvents such as methanol and is particularly suited for applications where a wide variety of organic solvents may be encountered such as compound distribution.


Accessories and Options

IFA Automation Blood Grouping Sample Processors Diluters Support OEM
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