does P1000 and P5000 pass validation? Why, why not? P1000Weight 1 (g) Weight 2 (g)Weight 3 (g)Weight 4 (g) Weight 5 (g)1000 µl1.10.950.940.980.97100 µl0.100.140.110.100.11Does this micropipette pass validation? Show your workings and comment on how you reachedyour decisionP5000Weight 1 (g) Weight 2 (g)Weight 3 (g) Weight 4 (g) Weight 5 (g)5000 µl5.305.325.255.175.201000 µl0.750.840.810.770.79Does this micropipette pass validation? Show your workings and comment on howyour decisionyoureached

To validate the calibration of the micropipette, we first convert the weight of each weight of the…

Answered: P1000 Weight 1 (g)| Weight 2 (g) Weight…

Principles Of Radiographic Imaging: An Art And A Science

6th Edition

ISBN:9781337711067

Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac

Publisher:Richard R. Carlton, Arlene M. Adler, Vesna Balac

Chapter37: Vascular Imaging Equipment

Section: Chapter Questions

Problem 2RQ

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Using a P-1000 micropipette, you transfer 800 microliter of ddH2O to a beaker and measure its weight. It turns out to be only 780 milligram; what is the percent error of this micropipette?
1 (a)Why is the spectrophotometer set at 0.000 absorbance for the uninoculated tube of broth? (B) Why can't you use the same plot (or standard curve) of plot of absorbance versus cell count for Escherichia coli for other bacteria? (C)List 3 advantages of estimating microbial numbers or biomass by the turbidimetric method? (C)(ii)List 2 disadvantages of this method? (D) Can you measure all kinds of microbes this way? Why not? ( this is not a graded assignment)
How would you make two-fold serial dilutions such that the last tube is a 1:32 dilution of the original, concentrated material? Assume that you need to have at least 500 µl of each dilution, and you should be able to perform the dilutions in microfuge tubes with a maximum capacity of 1.5 ml.
EXPERIMENT 2 Title: Aseptic technique Objectives: To apply the aseptic technique To observe the growth found on the petri dish. Material/apparatus: Gloves, incubator, soap for handwashing, tissues, nutrient agar, 70% alcohol Procedure: Wipe off the bench with 70% alcohol. Draw a line down the middle of the petri dish to divide the plate in half. Label each halves with A and B. Press your unwashed thumb onto the agar at column A. Apply proper handwashing technique. Put the same thumb after washing onto agar at the column B. Incubate the petri dish at 37°C for 24 hours or overnight. Observe and note down the colonies. Results:
If there are 103 cells per mL at the middle of log phase, andthe generation time of the cells is 30 minutes, how many cellswill there be 2 hours later?a) 2 x 103b) 4 x 103c) 8 x 103d) 1.6 x 104e) 1 x 107
Calculate the amount of phycocyanin in Sample 1 in mg where A620=0.204 and A650=0.061, taking into account the dilution factor as per question 6, and the total volume of extract as per question 4. Note your answer to 2 decimal places Sample 1 Total Extract Volume (ml) is 45 Dilution factor is 100 A280 is 1.07 A620 is 0.221 A650 is 00.97 Specific Absorbance Ratio (SAR) A620/A280 is 0.206
What are the advantages and disadvantages of nitrogen reduction test? Thank you
You obtained the following raw data when setting up a Bradford standard curve: BSA (mg/ml) Absorbancy 595nm 0 0.225 1 0.310 2 0.420 3 0.510 4 0.610 5 0.720 6 0.810 7 0.915 8 0.950 9 0.980 10 0.990 Set up a standard curve. What would the quality of the line-fit (R2 value) be if you do not exclude experimental outliers? (Give you answer to 4 decimal places) Answer Skip Exit
you did a serial dilution experiment to determine the CFU/table of the Equate Children's probiotics. Given the ingredient list shown, how many colonies would you expect to see on a plate if you plated 0.1 mL from the 10-7 dilution tube, and incubated aerobically at 37 ⁰C for several days?
DILUTION COLONY COUNT CFU/mL 1:106 155000 1:107 15500 1:108 1550 1:109 155 Given these values how would I fill in the rest of this serial dilution table? Also, what would be a 1:1 CFU/mL value based on this table?
Which of the following is FALSE? Question 3 options: A Some bacteria reduce nitrate to nitrite B Some bacteria reduce nitrite to ammonia and/ or nitrogen gas C Sukfanilic acid and alpha- naphthylamine are used to detect if nitrites are present D A clear result after adding reagent A and B is negative for nitrate reduction E A clear result after adding zinc is a positive result for nitrate reduction
Answer the ff and state references: For his experiment, Brian needs to prepare 30 plates (use maximum volume), 15 slants (small test tube), and 15 stabs (big test tube) of Luria What is the total volume of the medium needed? What is the amount of each component needed, given the following media composition per liter of distilled water: Component g/L tryptone 10.0 NaCl 5.0 yeast extract 10.0 agar 15.0

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