![]() Third, parallax error occurs during measure the apparatus. Second, the apparatus is not dry and cleaned in a proper way. Firstly, error occurs during measure on electronic weigh balance. From this experiment, there are possible error occur. It is not accurate because of the different pressure from surrounding.īut then, the results are precise because all the measurement recorded shows the same results. When the results are compared to he theory, we can conclude that our result for experiment is not accurate but precise. For ml measuring cylinder, the result is decrease from Trial 1 to Trial 3. After that, for ml volumetric flask the result is decrease from Trial 1 to Trial 2 but increase from Trial 2 to Trial 3. Then for the ml pipette experiment, the result is decrease from Trial 1 to Trial 2 but from Trial 2 to Trial 3, the result is increase. For the Mimi pipette experiment, the result is increase from Trial 1 to Trial 2 but decrease from Trial 2 to Trial 3. From the data recorded, we can observe that all the experiment results are not in accurate and stable. The mass of water, container and temperature is measured and recorded. Calibration of Volumetric Glassware experiment is designed to help participants to learn both theories and practical skills to effectively calibrate and verify their volumetric glassware. Accuracy is the degree of closeness of measurements of a quantity’s actual volumes while the precision of the volumes is the degree to which repeated measurements under unchanged conditions show the same results.įor the accuracy and precision of the measurement, scientists need to calibrate their volumetric glassware periodically. ![]() The brief theory of calibration of glassware is accuracy and precision. In this experiment, accuracy and precision is important. A table was constructed according to the result. We also calibrated a beaker and 50 ml burette. We calibrated a volumetric pipette that was where experimentally determined what volume a pipette or flask really delivers. BRIEF THEORY: In this experiment, we were exposed to a variety of important concepts related to quantitative experimentation, including the proper use of measuring cylinder, volumetric glassware, analytical balances and statistics. Pipettes is calibrated to deliver specific lumen whereas volumetric flasks are calibrated on a contain basis. The density of water at a particular temperature which is measured is used to convert mass into volume. The calibration was done by measuring the mass of water contained in or delivered by the glassware. Why Do We Need To Calibrate Volumetric Glassware G) The experiment was repeated for 2 times. F) The above procedure was performed on each of the pipette. E) Then used the following equation to convert mass to volume. D) The bottle was weighed again to find the mass of water delivered from the pipette.
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