Iodine box standard source:It uses activated carbon or molecular sieve as the adsorption matrix to encapsulate nuclides such as ¹³¹I and ¹²⁹I. It is mainly used for the calibration of iodine samplers and iodine monitors. It is a key standard material for nuclear emergency iodine monitoring.

Aerosol standard source:Deposit radionuclides (such as ¹³⁷Cs, ²³⁹Pu) on the filter membrane or filter paper to simulate the morphology of atmospheric aerosols and be used for the efficiency scale of aerosol samplers, α/β counters and γ spectrometers.

Soil standard materials:Using air-dried, ground, and homogenized actual soil as the matrix, mixed with nuclides such as ¹³⁷Cs, ⁹⁰Sr, etc., it is used for verification of environmental soil radioactivity analysis methods and calibration of γ spectrometers and liquid scintillation meters.

Bioash/plant ash standard material:The powder matrix is ​​obtained by ashing treatment of animal and plant samples, and is mixed with nuclides such as ¹³⁷Cs, ²¹⁰Po and other nuclides. It is used for method verification of radioactivity detection of food and biological samples, and for quality control of biological monitoring after nuclear accidents.