Welcome to Roth Bioscience, LLC formerly known as Micrology Laboratories, LLC

How-To and Reference Guides

Operating Procedures for all our products are available to ensure correct usage and to ensure you're getting the most out of your purchase.  We have created individual documents for each product to make it convenient to access important information via your phone or tablet, as well as being able print hard copies.

R-CARD® Product Instructions

Testing 2mL-100mL Aqueous Samples on R-Card® Using Membrane Filter (PDF)
Product Storage Information  (PDF)
General Usage of R-CARD® Test Method (PDF)
R-CARD® Total Count - Operating Procedure (PDF)
R-CARD® ECC - Operating Procedure (PDF)
R-CARD® ECC-A - Operating Procedure (PDF)
R-CARD® Coliform - Operating Procedure (PDF)
R-CARD® E. Coli - Operating Procedure (PDF)
R-CARD® Enterococcus - Operating Procedure (PDF)
R-CARD® Salmonella - Operating Procedure (PDF)
R-CARD® Salmonella EC - Operating Procedure (PDF)
R-CARD® Listeria - Operating Procedure (PDF)
R-CARD® Yeast and Mold - Operating Procedure (PDF)
R-CARD® Lactic Acid Bacteria - Operating Procedure (PDF)


Membrane Filtration Media Instructions

Colichrome® MF ECC- A  - Operating Procedure (PDF)
Colichrome® MF ECC - Operating Procedure (PDF)
Colichrome® MF ECC Plus - Operating Procedure (PDF)
Colichrome® MF Coliform - Operating Procedure (PDF)
Colichrome® MF EC - Operating Procedure (PDF)
KwikCount™ MF EC - Operating Procedure (PDF)


Sample Preparation
Solid Sample Preparation for R-CARD® Test Method (PDF)
Liquid Sample Preparation for R-CARD® Test Method (PDF)
Surface Collection Sample Preparation for R-CARD® Test Method (PDF)
Understanding Dilutions: A Guide for Working with Dilutions (PDF)
Direction for Membrane Filtration Device (PDF)