PH meter

pH measurements and their application Purpose: The motive of this experiment is to determine the pH with potentiometric measurement using a pH meter and electrode. Procedure: In this lab we worked with several compounds, and we titrated an unknown weak acid as well as a known amount of potassium hydrogen phthalate. On day one we were tasked with filling several test tubes with a few milliliters of various solutions (pH 7, HCl, deionized water, H3BO3 NaHCO3, etc.) and evaluating the pH of each substance

Introduction The experimental setup will be a pH meter placed inside each water bottle of water to check the acidity in each one, and it will be tested with a pH meter. The purpose of the investigation is to see which company of water bottles has the highest pH level. The independent variables are the different companies of water, the dependent variable will be the pH level of the water, and the controlled variable will be the pH meter, the computer and wires, the glass of water, and the distilled

Materials & Method The present study was a clinical study carried out to evaluate the changes in salivary ph, after consumption of different snacks and beverages and to estimate their oral clearance time. SAMPLING: 60 randomly selected undergraduate students from hostel inmates of K.D. Dental College and Hospital, Mathura were examined. Out of these, 5 subjects were selected on the basis of following inclusion and exclusion criterion: Inclusion Criterion: • Subjects who were caries free i.e. DMFT

Charles River Laboratories, while now a multinational CRO with sites in over 15 countries, started with humble beginnings as a one man lab founded by Dr. Henry Foster. Initially, Dr. Foster set out to provide the greater Boston area with robert research models that he bred and cared for himself. Now, Charles River Laboratories has well over 8000 employees all over the word, and is dedicated to Behind the scenes of a lab there is a team of hardworking individuals ensuring that scientific progress

|7 |2 |0 |4-Me. Imid. |0.025 |1 |0.005 | |Acidic pH 6.5 |8 |2 |6.5 |2 |1 |- |- |- |- | |Basic pH 7.5 |9 |2 |7.5 |2 |1 |- |- |- |- | |Basic pH 8.0 |10

found that can a decrease in streptococcus mutans count as well as increase in pH. Hence the present study was done to compare the pH of saliva and plaque, before and after the intake of green tea and to evaluate the role of green tea and chamomile tea on growth of s.mutans in culture using saliva. Material and Methods: Salivary samples were collected from 30 healthy individuals aged 20-30 years with certain criteria. The pH of saliva was determined before, immediately after and

Studies on various aspect and objectives related to the present research work were carried during the year 2016 in Department of Food Technology, Guru Jambheshwar University of Science and Technology Hisar, Haryana. This chapter deals with the experimental set up of various experiments performed during the study. The experimental design and statistical analysis are also explained as well. 3.1 Materials: Shellac was provided by National Institute of Gum and Raisin, Ranchi. Chemicals were used in this

different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best results when testing the pH within a solution. The pH, which stands for the proportion of hydrogen ions in a solution, could be acidic (acidosis), neutral or basic (alkaline). The pH scale goes from numbers 1 through 14. A pH of 7 is neutral;

Problem: How does caffeine affect the pH of decaffeinated coffee? Hypothesis: The caffeine will increase the pH of the decaffeinated coffee. Research: Caffeine is an alkaloid that is found naturally in things such as nuts, leaves, and seeds. Caffeine is also known as 1,3,7-Trimethylxanthine, Thein, Methylbromine, Guaranine, Cafeina, Coffeinum N, Coffeinum Purrum, Dexitax, and Durvitan. The molecular weight of caffeine is 194.194 g/mol. The chemical formula for caffeine is C8H10N4O2. Caffeine

Colorimeter A colorimeter is a piece of equipment that is used to measure the concentration of dilute solutions (intensity of light). The colorimeter is mainly used to determine the concentration of a known solute (chemical that is placed into a solvent and dissolved) in a given solution by using Beer-Lambert’s Law which states that the concentration of a solute is proportional to the absorbance. According to Beer’s law, “when monochromatic light passes through the coloured solution, the amount