(Laboratory) Preparation of McFarland Standard

Question 1

1 ml is equivalent to how many ul?

Answer 1

1,000 ul

Question 2

9.99 ml is equivalent to how many ul?

Answer 2

9,990 ul

Question 3

0.001 ml is equivalent to how many ul?

Answer 3

10 ul

Question 4

0.01 ml needs how many ml of H2SO4?

Answer 4

9.99 ML

Question 5

0.02 ml needs how many ml of H2SO4?

Answer 5

9.98 ML

Question 6

0.03 ml needs how many ml of H2SO4?

Answer 6

9.97

Question 7

0.04 ml needs how many ml of H2SO4?

Answer 7

9.96 ml

Question 8

0.05 ml needs how many ml of H2SO4?

Answer 8

9.95 ml

Question 9

0.06 ml needs how many ml of H2SO4?

Answer 9

9.94

Question 10

0.07 ml needs how many ml of H2SO4?

Answer 10

9.93 ml

Question 11

0.08 ml needs how many ml of H2SO4?

Answer 11

9.92 ml

Question 12

0.09 ml needs how many ml of H2SO4?

Answer 12

9.91 ml

Question 13

0.10 ml needs how many ml of H2SO4?

Answer 13

9.90 ml

Question 14

9.99 ml of H2SO4 needs how many ml of BaCl2?

Answer 14

0.01 ml

Question 15

9.98 ml of H2SO4 needs how many ml of BaCl2?

Answer 15

0.02 ml

Question 16

9.97 ml of H2SO4 needs how many ml of BaCl2?

Answer 16

0.03 ml

Question 17

9.96 ml of H2SO4 needs how many ml of BaCl2?

Answer 17

0.04 ml

Question 18

9.95 ml of H2SO4 needs how many ml of BaCl2?

Answer 18

0.05 ml

Question 19

9.94 ml of H2SO4 needs how many ml of BaCl2?

Answer 19

0.06 ml

Question 20

9.93 ml of H2SO4 needs how many ml of BaCl2?

Answer 20

0.07 ml

Question 21

9.92 ml of H2SO4 needs how many ml of BaCl2?

Answer 21

0.08 ml

Question 22

9.91 ml of H2SO4 needs how many ml of BaCl2?

Answer 22

0.09 ml

Question 23

9.90 ml of H2SO4 needs how many ml of BaCl2?

Answer 23

0.10 ml

Question 24

What is the corresponding approximate density of bacteria in a tube with 0.01 BaCl2 and 9.99 H2SO4?

Answer 24

300 million/ml

Question 25

What is the corresponding approximate density of bacteria in a tube with 0.02 BaCl2 and 9.98 H2SO4?

Answer 25

600 million/ml

Question 26

What is the corresponding approximate density of bacteria in a tube with 0.03 BaCl2 and 9.97 H2SO4?

Answer 26

900 million/ml

Question 27

What is the corresponding approximate density of bacteria in a tube with 0.04 BaCl2 and 9.96 H2SO4?

Answer 27

1200 million/ml

Question 28

What is the corresponding approximate density of bacteria in a tube with 0.05 BaCl2 and 9.95 H2SO4?

Answer 28

1500 million/ml

Question 29

What is the corresponding approximate density of bacteria in a tube with 0.06 BaCl2 and 9.94 H2SO4?

Answer 29

1800 million/ml

Question 30

What is the corresponding approximate density of bacteria in a tube with 0.07 BaCl2 and 9.93 H2SO4?

Answer 30

2100 million/ml

Question 31

What is the corresponding approximate density of bacteria in a tube with 0.08 BaCl2 and 9.92 H2SO4?

Answer 31

2400 million/ml

Question 32

What is the corresponding approximate density of bacteria in a tube with 0.09 BaCl2 and 9.91 H2SO4?

Answer 32

2700 million/ml

Question 33

What is the corresponding approximate density of bacteria in a tube with 0.10 BaCl2 and 9.90 H2SO4?

Answer 33

3000 million/ml

Question 34

Concentration of H2SO4 in preparation of the McFarland Standard:

Answer 34

1%

Question 35

Concentration of BaCl2 in preparation of the McFarland Standard:

Answer 35

1.175%

Question 36

Recommended density of the McFarland Standard:

Answer 36

1.5 x 10^8 CFU/ml

Question 37

Chemical formula of Sulfuric acid:

Answer 37

H2SO4

Question 38

Chemical formula of Barium chloride:

Answer 38

BaCl2

Question 39

H2SO4 is also known as _____

Answer 39

Sulfuric acid

Question 40

BaCl2 is also known as _____

Answer 40

Barium chloride