Product Information The Hematology Division at R&D Systems offers a variety of Controls, Calibrators and Linearity or Calibration Verification materials for your quality control needs. You may use our Product Lookup facility to search for products by Keyword, instrument Manufacturer or specific Instrument. You may browse our Catalog by Product type, obtain a Shipping Schedule or find an MSDS for any of our products. If you have questions about our sales policy or need Ordering Information, just click on that link. For technical bulletins or literature, check Technical Information.