Abstract
By using seventeen rainwater samplers of ten different designs, the effects of these designs such as the aerodynamic design, the collection surface diameter, and the height from the set up ground on the collection efficiency were investigated to find a suitable sampling method.
The efficiencies were almost same due to the changes of the diameter from 17.0cm to 35.7cm and the changes of the height from 25cm to 125cm. However, the efficiencies of the sophisticated samplers equipped with the special function such as the filtration for particulate matters and the automatic lid opening during rain periods were slightly decreased.
Almost all the collection efficiencies of the samplers having a enough collection surface diameter and located with a enough height from the ground were not deviated for short period sampling (e.g. event basis).
