GB/T 42660-2023 Active National standards

GB/T 42660-2023 Aerosol particle number concentration—Calibration of condensation particle counters

Publish Date: 2023-08-06 Implement Date: 2024-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 42660-2023

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Screening, sieve plates, and sieve nets

ICS Name: Granularity analysis and sieving

Publish Date: 2023-08-06

Implement Date: 2024-03-01

Pages: 104 pages

Scope

This document describes the method of calibrating the detection efficiency of condensation nuclei particle counters (CPCs) when the particle number concentration ranges from 1 cm-3 to 105 cm-3, and its associated measurement uncertainties. Generally, the detection efficiency will depend on the particle number concentration, particle size, and composition. The calibration method described in this document covers a particle size range of approximately 5 nm to 1,000 nm.
These methods can be used to determine the CPC calibration factor when the detection efficiency is relatively constant (stable efficiency) over a large particle size range, and to characterize the lower limit of the CPC detection efficiency when the particle size is smaller. For more detailed parameters, see Appendix A.
This document is applicable to the calibration of CPCs with an air intake flow rate of 0.1 L/min to 5 L/min.
This document describes a method of estimating the uncertainty during the CPC calibration process.