Since 1969 Poly Scientific R&D Corp. has manufactured special stains and reagents used in histology, microbiology, cytology and clinical laboratories. Our products are made fresh to order with BSC certified stains and USP or ACS grade reagents ensuring you receive the highest quality and longest shelf life possible. In addition to our catalog items we will customer formulate and package according to your needs. Visit our website. It is user friendly and easy to navigate through.