1. BET surface: 150/200/250/300/380 2. pH value: 3.8-4.3 FUMED SILICA Pyrogenic SilicaPRODUCT DESCRIPTIONSynthetic, hydrophilic amorphous silica, produced via flame hydrolysis.TYPICAL GENERAL CHARACTERISTICSCharacteristicsQY150QY150HQY200QY200HQY250QY300QY380BET surface area155-185m2/g160-180m2/g186-225m2/g190-210m2/g226-275m2/g276-335m2/g336-405m2/gpH-Value3.8-4.54.0-4.53.8-4.54.0-4.53.8-4.53.8- ...