Semi-Automated Sample Preparation (SASP) for Viscotek DSV
Semi-Automated Sample Preparation (SASP) assists operators in the preparation process by controlling the weighing and dispensing operations. SASP automatically compensates for impurities as well as temperature and density variations so that exact concentrations of polymer solutions can be easily and precisely prepared.
The system links the balance and syringe pump(s) with the powerful ARV software. ARV prompts the operator through the weighing steps, ensuring that the appropriate amount of sample is provided and the balance delivers a stable reading. It then calculates the exact amount of solvent to deliver considering the weight, impurities, temperature expansion of the solvent, and solvent density. The syringe pump(s) then deliver that solvent precisely to the vial. All information is stored in data files for easy documentation.
Additional features of the SASP system include:
- Weight/volume and weight/weight preparation
- Automatic correction for sample impurities
- Automatic correction for solvent expansion
- Automatic calculation of solvent density
Automating the sample preparation process through SASP removes sample preparation and operator-to-operator variability and yields better precision of the solution viscosity measurement.
Other automation options are:
The DSV Autosampler provide automated sample delivery, which frees the operator from manual sample introduction and allows unattended processing of a whole sample batch.
More Information
The Vortex autosampler is an advanced automated sample preparation and delivery option for the Viscotek DSV. It is an integrated autopreparation/autosampling device with high temperature capability and is designed to increase efficiency, enhance precision and promote operator safety.
More InformationMore information
Featured presentations and application notes:
Application communication: Intrinsic viscosity of cellulose in cuprammonium hydroxide The Solomon-Gatesman function is showed to give intrinsic viscosity without extrapolation to zero concentration required by the Kraemer and Huggins methods. Viscosity of cellulose is measured using an automated dilute solution viscometer and compared favorably to glass capillary results.
Application communication: Intrinsic viscosity of cellulose in cupriethylenediamine Intrinsic viscosity of cellulose in Cupriethylenediamine is compared to cellulose in Cuprammonium Hydroxide. After careful dilution, the results were in good agreement.
Application communication: Dilute solution viscosity of polyethylene terephthalate (PET) Viscosity of PET in OCP (Orthochlorophenol) and in 60% phenol / 40% TCE (Trichloroethanol) are measured every 5.5 minute automatically using the DSV. Excellent results are reported for both solvents.
More application notes and online presentations are available to search for FREE in the Malvern Application Library and Presentations Database (Requires Free registration).
