ISO 21822:2019 pdf download – Fine ceramics (advanced ceramics, advanced technical ceramics) — Measurement of iso-electric point of ceramic powder. Materials that do not elute in the range of pH 2 to pH 10 should be used. Special care is needed for soda lime glass, which may elute in a strong base condition. 5.4 Sonicator The sample should be dispersed by a tip sonicator, preferably, or a bath-type sonicator. A homogenizer, mortar, or vacuum degassing machine can be applied when needed. 5.5 Balance A balance with a measuring capacity of 200 g or above with 10-mg precision. 5.6 Temperature-control device...