Calibration of Glassware Lab Report Example | Topics and Well Written Essays - 500 words

Calibration of Glassware - Lab Report Example Get rid of all the water in the canonical flask. All the other volumes of water marks in canonical flask will be measured by the balances that read to  ±0.0001 g for this experiment. The only exception will be the calibration of 100 mL volumetric flask mark. For that mark, one should use the balances that read to  ±0.001 g because they can handle heavier weights. The estimated uncertainties are weight of water, error in sighting the level of the water, density of water and error in temperature reading. So as to avoid introducing random and systematic errors in measurements, it is essential to calibrate them. Volumetric glassware is manufactured to specific standards, but it is not all identical and the manufacturing tolerances are not as strict as you may require for certain Lab measurements. Indeed, small variations often occur from one piece of glassware to the next. It is possible to correct for systematic errors in the calibration markings, and such corrections are necessary for the most accurate analytical work. Volumetric measurements are affected by two main systematic errors; parallax and temperature. The volume that a certain liquid occupies varies with temperature. Even the volume of the apparatus holding the liquid is also affected by the temperature. 21 degrees Celsius has been taken as normal room temperature for calibration. This table contains as many as 50 trials in order to get more reliable estimation of the measurement uncertainties. The data value was arrived at by conducting a minimum of three trials to obtain a suitable calibration. All the findings were recorded in the format above. To improve on proper measurement of volumes, manual calibration of apparatus should be done regularly. To also improve on their performance, volumetric flasks, which are usually colorless, they might be amber-colored so as to handle most light-sensitive

Sustainable Event Management Essay Example | Topics and Well Written Essays - 2250 words

Sustainable Event Management - Essay Example One of such companies is Seventeen Events, a sustainable event management agency that produces events for a number of consumers and is an expert in managing table plans as well. Being proud of its sustainable approach, the company goes far beyond recycling and organic beverages and it is in its heart what make a business successful (Sustainable Event Management, 2015). Following the creativity and transparency values, the company perceives innovation and creative thinking as critical to its performance, while its transparency approach allows the company to share its best practices to customers and be open with suppliers. In the past decades sustainability has become one of the main goals of most businesses; however, it can be difficult to measure the degree to which they are sustainable. Slaper and Hall (2015), consider that using a triple bottom line or TBL framework it is possible to go beyond the usual measures of earning and ROI, shareholder value to include dimensions of society and environment. However, if focus on the investment outcomes with respect to profit, people and the planet dimensions, TBL can be used as an important tool to assist sustainability goals (Sridhar & Jones, 2012). At the same time, the TBL is considerably old approach, while social and environmental institutions are changing and improving. In these terms, the following paper will illustrate critical approaches toward TBL and will analyze the theory and the sustainability policy of Seventeen Company. The idea behind the TBL approach is that business’ success is defined and measured through traditional financial bottom line, while its social, ethical and environmental performance is not taken into consideration much (Norman & MacDonald, 2004). However, following the environmental activities, the companies are able to inform its