Reactiv Phenolphthalein indicator solution 1 % in ethanol 90 %, denatured , 500 ml Solicita oferta 🢒 Vezi Detalii
Reactiv 4-(2'-Pyridylazo) resorcinol monosodium salt, p.a., ACS , 25 g Solicita oferta 🢒 Vezi Detalii