Strict Quality Control

DAISO has a rigid quality control system based on ISO 9001 for the silica gel manufacturing plant and DMF (Device Master File) of the FDA (Food and Drug Administration) for the plant in which the chemical modification is done. DAISO controls the quality of the raw materials and of the products at each manufacturing stage. We deliver only products which satisfy our severe specifications. We analyse the pore size, the surface area, the pore volume and the pore size distribution by BET and porosimetry, the particle size and its distribution by sedimentation method and electrical resistance method. Adding to that we measure the pH, the volatile matter and do selectivity tests for all phases. All relevant data of products we deliver are filed.
We also analyse metal impurities by XRF and ICP and observe surface conditions by microscope and scanning electron microscope.