Abstract: A particle counting method comprises obtaining first particle information related to the gas to be measured by a first particle counter with a first particle size detection range, obtaining second particle information related to the gas to be measured by a second particle counter with a second particle size detection range, and generating particle size distribution information according to the first and second particle information. The first particle information includes a plurality of particle size ranges and a plurality of particle quantities wherein each of the plurality of particle size ranges corresponds to a respective one of the plurality of particle quantities, the second particle information includes the quantity of particles of which the size values are in the second particle size range, and the lower limit of the second particle size range is lower than that of the first particle size range.

Abstract: A particle counting method comprises obtaining first particle information related to the gas to be measured by a first particle counter with a first particle size detection range, obtaining second particle information related to the gas to be measured by a second particle counter with a second particle size detection range, and generating particle size distribution information according to the first and second particle information. The first particle information includes a plurality of particle size ranges and a plurality of particle quantities wherein each of the plurality of particle size ranges corresponds to a respective one of the plurality of particle quantities, the second particle information includes the quantity of particles of which the size values are in the second particle size range, and the lower limit of the second particle size range is lower than that of the first particle size range.

Abstract: The all-directional fall sensor of the present invention includes a first casing defining a first interior space filled with a liquid and a floater buoyed by the liquid inside the first casing. The floater includes an indicator having indicative materials therein. The indicator includes a body defining a chamber, which is divided into at least a first portion and a second portion with a first sealing member located therebetween. The indicative materials are contained in the second portion of the chamber and are sealed therein with the first sealing member. When the all-directional fall sensor is applied with a force, the first sealing member would be dislocated and thus the indicative materials are dispersed within the chamber.

Abstract: The present invention relates to an apparatus and method for a drop indicator having a magnet installed therein. The drop indicator according to the invention is used to determine whether a product has ever been dropped or impacted, either in delivery or in use, by inspecting changes in the original condition of the magnet caused by the interaction between the magnetic force and the acceleration of gravity, inertia force, and colliding force, etc. generated upon collision. Take a cell phone or a PDA, for example, changes in the indicative material of the drop indicator will help decide whether the faulty product has ever been dropped or impacted in delivery or in use, so that liability can be determined.

Abstract: The all-directional fall sensor of the present invention includes a first casing defining a first interior space filled with a liquid and a floater buoyed by the liquid inside the first casing. The floater includes an indicator having indicative materials therein. The indicator includes a body defining a chamber, which is divided into at least a first portion and a second portion with a first sealing member located therebetween. The indicative materials are contained in the second portion of the chamber and are sealed therein with the first sealing member. When the all-directional fall sensor is applied with a force, the first sealing member would be dislocated and thus the indicative materials are dispersed within the chamber.