distilled water preparation in in lab

3:38

4:23

4:54

3:08

1:00

2:31

1:34

11:25

3:50

4:00

1:35

00:15

5:22

8:43

00:47

11:39

3:01

19:35

00:45

3:34

9:09

16:34

2:15

10:57

2:08

5:59

2:15

8:06

7:23

00:09

1:30

24:07

1:37

22:39

5:29

9:22

3:10

1:19

8:30

3:36

3:54

7:51

6:23

2:09

3:09

1:37

1:17

14:32

4:43

5:13

4:55

3:01

1:31

2:28

00:58

14:33

11:04

7:42

6:28

2:21