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(616) 392 - 8001 • (800) 572 - 6653 • Fax: (616) 396 - 7520 • 590 East 32nd Street, Holland, MI 49423 • [email protected] www.resolutionsys.com The Soluprep II solution preparation system automatically calculates and dispenses the exact amount of solvent required to prepare a precise concentration based on the approximate mass of solute added by the operator. The demand for greater accuracy from analytical instruments has prompted the automating of sample preparation based on the much more accurate solvent weight-to-sample weight basis. The Soluprep II accomplishes this by automatically preparing samples for liquid chromatography, gas chromatography, spectroscopy, viscosity, NMR and other analyses. The Soluprep II System improves laboratory sample-solution preparation by offering the following advantages. Sample solutions can be routinely prepared on a weight-to- • weight, Normal, Molal or Molar basis to an accuracy of 0.02%, two parts in 10,000). Time is saved because only the approximate amount of the • sample needs to be added to the sample. The computer com- pensates by adding the exact amount of solvent. Typical solution preparation time is less than 2 minutes. If your lab • analyzes 50-100 samples per day the labor savings can rapidly recover the cost of investment. Up to eight different solvents can be dispensed with zero cross • contamination. Ordinary, disposable sample bottles can be used to prepare • the solution directly. The expense and labor of using volumetric glassware is eliminated. Eliminates cleaning and breakage of expensive volumetric glassware. Eliminates operator-to-operator variability. • Provides ISO and GLP documentation. • Decreases exposure to solvents. • Samples solutions can be easily prepared with mixtures of • solvents. This eliminates the labor and waste associated with premixing solvents. A self-adhesive label(s) for the prepared solution is automatically • printed for each sample. A permanent file of each sample and its preparation is stored for later recall. Virtually any solvent can be used. • Solution Preparation System Change in solvent density as temperature increases by 5º C. Solvent % Decrease Acetone 0.758 Acetic Acid 0.510 Methanol 0.827 Ethanol 0.825 n-Propanol 0.503 Methyl Ethyl Ketone 0.658 Toluene 0.616 Benzene 0.687 Carbon Tetrachloride 0.401 Chloroform 0.422 Methylene Chloride 0.513 Water 0.116 Cyclohexane 0.706 Dimethyl Sulfoxide 0.497 TABLE 1
