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how often do we have to clean and caliberate a spirometer based on national and international guidelines
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- Which spectrophotometer mode should you use to calibrate the instrument and which mode should you use to read your samples? Transmittance for both Absorbance for both Absorbance to calibrate and transmittance to read samples Transmittance to calibrate and absorbance to read samples Flip a coin to pick a mode each time.If you observe a specimen under this 20X objective and the specimen spans one-quarter of the field of view distance, how long is the specimen in micrometers?What special precautions must be taken when using the oil immersion (100x) objective?
- Which of the following is/are source/s of error in performing a spectrophotometric method? Answer all that apply. Sample is turbid when the absorbance is read. The absorbances were read at maximum absorption. Standard solutions are prepared accurately. The cuvettes have fingerprints.What is the purpose of examining your specimen slide using low power objective first nefore high power objective?A radiograph was produced using 80 kVp, 800 mA, .75 seconds and a 72 inches SID. In order to maintain the same density, how much time should be used with the following factors: 92 kVp, 200 mA, and 36 inches SID?
- Explain the relationship between absorbance (A) and transmittance (T) for the basic spectrophotometer technique.Assume your field of view under a 3X objective is 6mm across. What is the field of view in mm under a 20X objective? Show clear work with units for credit. Field of view 20X objective? ___mm What is the field of view of this 20X objective in micrometers? If you observe a specimen under the 20X objective and the specimen spans one-quarter of the field of view distance, how long is the specimen in micrometers?What is the working electrode used for polarography technique? a. Platinum b. Silver c. Gold d. Dropping Mercury Electrode (DME)
- Here are the materials and method for the basic spectrophotometer experiment Materials:1. Paper template2. Scissor3. Light source (i.e. torchlight, portable light)4. Paperboard (black colour)5. Unused compact disc (CD)6. Camera detector (i.e. webcam, laptop, mobile phone) Methods: 1. Make a foldable paper spectrophotometer using the paper template and followthe instruction as in https://publiclab.org/sites/default/files/8.5x11minispec3.8.pdf2. Then, mounted the paper spectrophotometer to the camera detector.3. Download any freely available spectral analyzer.4. Test and observe the wavelength with and without the presence of a light source.5. Finally, observe the wavelength with a different transparent colour sheets (you canchoose any colour). Troubleshooting/ problem(s) encountered for basic spectrophotometer experiment.Why is it important that the standard curve you create in biological analyses with spectrophotometry is measured using specialty cuvettes?Why is there a need to provide the magnification of a specimen drawn?
