Which brand and model of dust particle counter is better?

CW-HPC600 and; CW-HPC600A hand-held laser dust particle counter is a high-sensitivity laser dust particle counter built by Shenzhen Sainawei Environmental Technology Co., Ltd., which integrates hand-held and desktop printing ... Its patented design not only leads the international similar products in sensitivity, resolution and stability of sensor technology. More unique multi-functional integrated design, meet and facilitate the needs of users. It can measure the quantity and distribution of particles in the environment in real time and accurately. Various measurement parameters can be set, such as automatic real-time display, granularity selection, timing, delay and automatic repeated measurement, time and date setting, data storage and printing, counting over-limit alarm lamp function, etc. Propylamine methyl thiophosphate ethyl ester

CW-HPC600 and; CW-HPC600A handheld particle counter is designed according to the international standard ISO 14644- 1, which is displayed in Chinese and English with backlight. The novel FPGA technology ensures the reliability and accuracy of real-time detection when six users arbitrarily set the granularity channel to be tested. The built-in flash memory can store up to 1000 sets of sampling data, and can realize high-speed data download through USB interface. The instrument has high test precision, stable performance and strong versatility, and is an ideal instrument for testing the cleanliness level of clean environment and clean room in quality supervision institute, ultra-large scale integrated circuit ultra-clean workshop (room), authoritative inspection institutions such as electronics industry, medical and health care, food processing, optics or precision machinery, and scientific research departments such as aerospace. Shiliukai

Look at this picture and you will know how good it is.