Located in High Ridge, MO. USA, Simmler's tradition of manufacturing the highest quality diagnostic reagents, dates back over 35 years to 1968. From our past to our present day, Simmler Inc. has held itself to the highest standards of quality and service in the industry. Simmler, Inc. services a wide variety of hospitals and laboratories in the United States, Canada, Europe and the Orient. Simmler, Inc.'s premier products, the S0412-00 Fetal Cell Stain Kit 300 test kit and S0412-100 Fetal Cell Stain Kit 100 test kit are used as the industry standard for the modified Kleihauer-Betke method of the detection of fetal cells in maternal blood.