Volumetric flask

Preparation of Calibration curve of prazosin hydrochloride Determination of λ max of prazosin hydrochloride Exhibited peak absorbance at 330nm (λ max) in methanol. Standard solution 50mg of standard drug was accurately weighed and placed in 250ml of volumetric flask and 50 ml methanol was added to it and shakes for few minutes to prepare 1000microgram/ml. Stock solution From this solution the stock solution was prepared by taking 1 ml from standard solution and made the volume to 100 by…

The purpose of this laboratory experiment was to create a clear aqueous fertilizer that had a pH range of 6.0-7.0 with first three solid compounds the first day and then four solid compounds the second day. To complete this experiment, make calculations to find how much of each compound is needed in grams, use an analytical balance to measure out compounds accurately, mix the compounds in DI water until they are dissolved, test pH levels, effectively add acids or bases depending on pH level, and…

Pantoprazole undergoes hepatic first pass metabolism , hence it shows poor bioavailability. The aim of study was to prepare and evaluate mucoadhesive tablet of pantoprazole using tamarind seed powder in combination with HPMC, magnesium oxide, and talc. Tamarind seed powder is used for dissolution enhancer (improve dissolution). Method: Six Formulations were developed with varying concentration of polymer like HPMC and other excipients like tamarind seed powder, magnesium oxide and lactose…

Experimental Conditions It is important to note that in our lab experiment we used galena, PbS, with 170 – 200 mesh (i.e. there were 170 to 200 wires per inch of sieve used to sort out the galena crystals). This means our diameter range of our particle size was 75-90 μm. Table 1:Experimental Conditions for PbS leaching FeCl3·6H2O (g) to be added is found by: The weight of FeCl3·6H2O (g) added in our experiment was slightly larger than the theoretical amount of FeCl3·6H2O needed, as can be seen…

wavelength of peak and theory: second derivative finds acceleration of change: at y = 0, x = onset wavelength. In the first trial, the instrument zeroed using DI water in both cuvettes and 2-5mg of sample diluted to various volumes in DI water using volumetric flasks, and this was used as reference for all analyses. In the second trial, using RO water, and this was used as reference for all analyses. However, all these analyses that used different water showed the same results. %Transmittance…

and mortar. The residue was allowed to settle and decanted slowly in a separating funnel; it was then washed twice with 25 ml portion of acetone and 25 ml hexane and then repeatedly washed with water. The upper layer was transferred to a 100 ml volumetric flask containing 9 ml acetone and volume was made up with hexane. The total carotenoid was calculated by measuring OD at 450 nm using spectrophotometer as given below. The blank used was 9 ml hexane and 1 ml acetone mixture. Total carotenoids…

STAIN GLASS PROJECT CRITERION A: KNOWING AND UNDERSTANDING: INQUIRY AND ANALYSIS. CONCEPTS What is a concept? A concept is simply an abstract or general idea or notion that is derived or inferred from specific instances or occurrences. KEY CONCEPT: CREATIVITY -FACTUAL Factual— Stain glass is a technique that has been present in many cultures for centuries. What is creativity? Creativity is defined as the tendency to generate or recognize ideas, alternatives, or possibilities that may be…

CHAPTER-V FORMULATION AND EVALUATION OF LEVODOPA FLOATING TABLETS FORMULATION AND EVALUATION OF LEVODOPA FLOATING TABLETS Several approaches are currently used to retain the dosage form in the stomach. The principle of the floating tablets is simple and practically approach to achieve increased gastric residence time to obtain controlled release floating tablets designed based on the gas generating principle needs a strong floating matrix former. In this regard HPMC K4M,…

Asthma and chronic obstructive pulmonary disease (COPD) are among the most common and prevalent diseases in the world (Raadhika and Shanthi, 2012; Rao and Kulkarni , 2012). Salbutamol sulphate (SS) is a short-acting β2-adrenergic receptor agonist used for the relief of bronchospasm (Sharma et al., 2015). Salbutamol sulphate is readily absorbed from the gastro intestinal tract following oral administration, and it undergoes the first pass metabolism in the liver. It requires multiple dosing a day…