✔ 最佳答案
What is your purpose of buying (using) a Geiger Muller (GM) counter?
There are difference form and construction of GM tubes that suit difference purposes. Some are for radioactivity counting and some are for dose and dose-rate measurements.
Moreover, the kind of radiation (alpha, beta or gamma) to be detected also determine the type of GM tube to be used.
GM tube and counter is available for purchase in Hong Kong. You could obtain them from some companies selling scientific instrument and equipment. The price depends on which type of GM counter you purchase. It could range from several thousand to several tens of thousands.
