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The SPS-5 Sample Preparation System is a random-access autosampler which can be connected to all of the AA, ICP and UV spectrometers currently manufactured by Varian. It can hold up to 500 samples when the optional rear rack extension is fitted. A fume hood is also available.
A range of rack types is available for different test tube sizes. Rack hole sizes can be further customized with the 60 position (Type 25) rack for different test tube diameters. The SPS-5 is compatible with the optional on-line Auto-Diluter.
The SPS-5 autosampler includes rinse station, two racks (Type 25 and Type A) and inert probe. Standard configuration allows up to three sample or standard racks to be used at once. With the optional rack extension, up to five racks may be accommodated. Racks must be ordered separately. The autosampler requires but does not include test tubes/bottles.
The SPS-5 is also available in a fibreoptic autosampler version for use with the Cary 1, 3, 4, 5, 50, 100, 300, 400 and 500 with the Cary WinUV software. Version 2 of the WinUV software does not support use of the SPS-5 with the normal liquid sampling probe nor does it support the optional Diluter.
To reduce the risk of operator error, the SPS-5 features Magnetic Rack Recognition (MRR). Each rack has an embedded magnet which is detected by sensors in the SPS-5. The SPS-5 can detect rack presence and type, minimizing the risk of operator error during rack changes.
The SPS-5 can be fitted with five different rack types, catering for a range of sample vessels:
The Type 25 rack can be fitted with adapters to hold small diameter test tubes. The Type A and B racks are supplied with vessels. All racks are made from chemical-resistant polypropylene.
The height of the SPS-5 probe can be programmed so that you can sample from a particular layer in a sample or avoid aspirating sediment from the bottom of a vessel.
An optional Diluter can be fitted to the SPS-5. This can be used for off-line standard and sample preparation prior to a run. It can also be used to perform on-line dilutions for some techniques.The Diluter’s design ensures that the syringe is never contaminated.
After dispensing any solution into a sample vessel, the SPS-5 will mix the contents with the probe. The probe is simultaneously vibrated horizontally and moved up and down through the solution. Splashing is eliminated as the probe height is set in response to the volume in the vessel.