Ticket №2

1. choose the right equipment necessary for sampling water - bottle volume of 0.5 liters with a glass stopper, alcohol, cotton swab, matches, stick, parchment paper, pen, act

2. Immolation valve using an alcohol torch. Then the valve was opened for 10 minutes and drain the water, and sample was collected in a sterile container in the volume 0.5 liters.

After a set of tests on the dishes imposed parchment paper, then immediately closed the bowl with a lid. Dishes enveloping parchment paper.

Ticket №3

1. Select the desired equipment - gloves, a petri dish with a nutrient medium, the thermostat, the act

2. Petri dishes with nutrient left open for 5 minutes to 3 points. Then close the lid, said. In laboratory Petri dish placed in an incubator. Explain the results of the study of bacterial pollution.

Ticket №4

1 to select the right equipment necessary for sampling water for complete chemical analysis - Glassware 5 liter, cork, act water sampling, pen

2.Otkryl valve and drain the water for 10-15 minut.Nabral water in a glass bowl in a volume of 5 liters, then turned off the tap and bowl with a lid

Ticket №5

1.Pravilno chosen instrument-hygrometer.

Explain the principles of operation of the device:

-postavil upright.

- Turn on the device

-posmotrel the state of the batteries after 2 seconds noted the temperature and humidity of indoor air, recorded.

2.Pravilno measured the temperature of indoor air.

Vertical:

- Measurements conducted in 2 points, at a distance of 15-20 cm from the floor, at 1.5 m from it

- Determine the difference (normally should not exceed 20C)

Determine the temperature of the horizontal:

- Measuring in 3 points on the diagonal cross section of the room, recorded

-zameril distance of 15-20 cm from the outer wall in the center of the room and at 15-20 cm from the interior wall recorded

- Determine the difference (normally not exceed 2-2, 50S)

- Register the room temperature.

- Determine the arithmetic mean.

Correctly identified the relative humidity of the air space. Switch off the appliance

Ticket №6

1.Pravilno chose the necessary equipment for soil sampling for chemical analysis - soil, scales, gloves, mesh bags, spatula.

2. Select the two sites with an area of ​ ​ 25m2 each: control and investigated. Each site has outlined five points by the method of " envelope", then at each point dug pit section 0.3 * 0.3 m and a depth of 0.2 m, the surface of one of the walls of the pit Stripping knife, then cut out of the wall of the soil sample, the amount of which is caused by a given sample.