11. The hearts are stored in the preservative chemical formalin and many have been dissected. 12. The most common fixative is formalin , although frozen section fixing is also common. 13. The modified formalin -ethyl acetate ( FEA ) concentration method concentrates the stool. 14. These reductant, for example hydroquinone or formalin . 15. This fixative is an aqueous solution of formalin , potassium nitrate and potassium acetate. 16. He is also credited with developing a formalin for the preservation of bacterial cultures. 17. Formalin is a highly toxic form of the preservative formaldehyde used to kill aquatic parasites.18. The cis product was treated with formic acid and formalin to create the trans product. 19. The tissue hardening effect of formalin is balanced by the soft tissue fixation of picric acid. 20. Both ammonia intensification as well as the formalin installation were the investments designed and performed independently.
