supply of 1. sodium hypochlorite 20 solution. ar grade. 2. sulphuric acid concentration: 98. assay minimum 97.9 . iron maximum 0.0005. 3. silver sulphate concentration: 98.5. assay minimum 98.5. 4. ferrous ammonium sulphate assay minimum 98. chloride (cl) maximum 0.002. 5. mercuric sulphate (mgso4) assay minimum 99. nitrate maximum 0.005. chloride maximum 0.003. iron maximum 0.005. 6. potassium dichromate (k2cr2o7) assay minimum 99.9 chloride maximum 0.001 iron maximum 0.002 7. whatman gf/c filter paper diameter 70mm. 1 pack of 100 circles/filter papers. 8. conical flask capacity: 500ml. material: glass. 9. volumetric flask capacity: 50ml. material: glass. 10. turbidity calibration standard kit ntu: 0.1, 10, 100, 1000. reusable with long shelf life. provided with certificate of analysis. 11. weighing balance mini electronic compact 6-10 kg capacity.