Weighed accurately about 25.0 mg of baclofen and transferred to 25 ml volumetric flask. Added 20 ml of a 0.001 M aqueous hydrochloric acid solution and sonicated to dissolve and degassed. The resultant solution diluted up to the mark with diluents to obtain 1000 μg/ml. Further stock solution was used to prepare plasma standards to construct the calibration curve. C. Pre-chromatographic isolation of baclofen from plasma Prior to chromatography‚ baclofen from plasma constituents was isolation by adding
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Nutritional qualities of dehydrated sapota Divya‚ A. R.‚ Manjunath‚ V.‚ Usha Ravindra Department of Agricultural Engineering‚ UAS‚ Bangalore-65 ABSTRCT To standardize a recipe for the preparation of sapota candy‚ the fruit was steeped in three different combinations of sugar syrup concentrations (20/30/400Brix‚ 30/40/500Brix and 40/50/600Brix) for osmotic concentration. The osmosed sapota slices were then dried at two different temperatures 55 and 600C. It was observed that candy product processed
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DESIGN CONSIDERATIONS * System: Ethanol – water * Feed rate: 225kmol/h * Feed composition: 28 mol% ethanol * Feed condition: 50% saturated liquid & 50% saturated vapor * 97% of ethanol recovery is required * Operating pressure: 1bar * Distillate composition: 81 mol% ethanol * Column type: Sieve tray column * Operating condition: 70% of flooding Applying material balance to the rectifying section (Eqn 01); V=L+D Applying material balance for the more volatile
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generated by a jet of water as it strikes a flat plate‚ conical plate and hemispherical cup may be measured and compared with the momentum flow rate in the jet. 2.0 Experimental Design 2.1 Apparatus and Materials The jet impact apparatus Volumetric hydraulic bench/water 3 different shapes of vanes : Flat plate Conical cup Hemispherical cup Stopwatch Figure 1. Arrangement of apparatus. Procedure Starting with the flat plate‚ the apparatus is firstly leveled and the lever set to
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1. Beakers (5ml markings) 2. 10ml graduated cylinder (0.1 markings) 3. 5ml vials (0.1 and 0.3 markings) 4. 1ml plastic pipets (0.1 ml markings) 5. 1ml syringes (0.1 ml markings) 6. 1ml graduated volumetric pipets (0.01 ml markings) B. A 1ml graduated volumetric pipet is the best to use if you want 0.15 ml of reactant C. 1ml plastic pipets (used 2 times) are best to use when you want 2 ml of solvent Safety Hazards: 1. Methanol is flammable and toxic. Don’t breathe
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400 mL of deionized water into a clean beaker‚ and let it stand for 15 minutes to equilibrate to room temperature. Note‚ there is only one deionized water tap in the lab room; make sure you use the correct tap. 2- Confirm that your 10.00 mL volumetric pipet is clean by filling to above the mark with deionized water and then letting it drain. Your pipet is a transfer pipet is a transfer pipet that is calibrated “to deliver” (TD) rather than “to contain” (TC). The last drop of liquid should not
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observe the acid content of the fluid in a car battery. 3. Procedure: Calculate the volume of 6.00 M NaoH that is needed to prepare 250mL of an approximately 0.100 M NaOH solution. Transfer the calculated volume of the 6.00 M NaOH solution to a volumetric flask using a graduated cylinder. Obtain a 25mL buret‚ and rinse and fill it with the prepared base solution. Make sure there are no air bubbles trap within the buret. Calculate the amount of KHP required to reach equivalence point. Using a 125mL
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Lithiated Mixed Aggregates: NMR and Car-Parrinello Molecular Dynamics Reveal an Unexpected Associative Pathway. The Royal Society of Chemistry [online] 2008 vol2 p1-4 http://www.rsc.org/suppdata/cc/b8/b814961e/b814961e.pdf (accessed august 2012) E. Volumetric flask Jain‚ Pritam S; Surana‚ S. J. Spectrophotometric determination of ethacridine lactate in infusion. Pharmaceutical Methods. [Online] 2011‚ Vol. 2 Issue 3‚ p189-192 http://ehis.ebscohost.com/ehost/pdfviewer/pdfviewer?vid=13&hid=102&am
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Weigh 6g of brand ‘X’ of iron tablets 2. Dissolve in 100cm3 of 1.0 moldm-3 H2SO4(aq) in a conical flask. When necessary‚ gently warm the flask over the Bunsen burner. DO NOT BOIL THE MIXTURE. 3. Filter any solid. 4. Transfer any filtrate to a 250cm3 volumetric flask. Fill the solution up to the mark with distilled water. Label as solution X. (B) Titration of Solution X with Potassium Manganate (VII) Solution 1. Pipette 25cm3 of solution X into a conical flask. Add 25cm3 of 1.0 moldm-3 sulphuric acid
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Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of a known reactant. Because volume measurements play a key role in titration‚ it is also known as volumetric analysis. A reagent‚ called the titrant or titrator‚[1] of a known concentration (a standard solution) and volume is used to react with a solution of the analyte or titrand‚[2] whose concentration is not known. Using a calibrated burette or chemistry pipetting syringe
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