There are two instruments I have here at base camp: One is a vacuuming device with filters for taking in the air and filtering air particles. Another is a pH measurement set used to measure degree of acidity in snow. The acidity is determined by the change of color when put into a special tube.

They bring snow sampling kit to know how snow is contaminated in the Arctic by the human activities in urban regions.

We are not bringing advanced technological instruments, but we have a very accurate thermometer, a wind meter, sampling bottles and a GPS (Global Position System) to find precise position.

I and my colleague staying at the base-camp are responsible for an air sampler which consists of a pump and a flow-meter to collect atmospheric particulate matters (small dust suspended in the air). We also brought simple test-kits to measure acidification of snow or rain.