My Site - Ferrous sulphate heptahydrate - Lifeasible This product is suitable for plant tissue culture. CAS NO.7782-63-0. No structural deformity observed, actively growing shoots, no toxicity to shoots. No necrotic tissues, actively growing callus, no toxicity to callus. Cultures conditions: Incubation period (5wks), Relative humidity (60±2%), Temperature (25±2ºC), Photoperiod Day: Night in hours (16:8). Sat, 01 Aug 2020 15:23:54 UTC en