Simmler produces in vitro diagnostic reagents that meet your laboratory's requirements. Simmler is a customer service representative. It is a company that provides services to hospitals and laboratories. The industry standard for the modified Kleihauer-Betke technique of fetal cell identification in maternal blood is simmler's S0412-00 fetal cell stain Kit 300 test kit and S0412-100 fetal cell stain Kit 100 test kit. They offer fetal cell staining kits, which detect erythrocytes carrying fetal hemoglobin in maternal blood.