News
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COPYRIGHTED OR PATENTED MATERIAL AND UNAUTHORIZED USE (e.g. R-CARD® ECC vs R-CARD® ECC-A
Jonathan N. Roth Ph.D. June 9, 2022 During the decades since the start of this business, it has evolved through several registered names, includin... -
Microbiology for Everyone
Explore the unseen world of microorganisms. Most people know that "germs" cause many illnesses and diseases that sicken humans, other animals... -
Why Our Different Methods Produce The Same Result
Roth Bioscience, LLC is built around a core of unique diagnostic microbiological methods that provide the confidence that each method produces vi... -
SIMPLIFICATION OF THE KWIKCOUNT® EC MF METHOD (USEPA Approved - 40 CFR Part 136.3)
(Original Testing and Data by Fu-Chih Hsu and Rebecca Wong of Scientific Methods Inc) Following are suggestions of how to simplify the KwikCount®... -
WHY R-CARDS AND OTHER MEDIA REQUIRE DIFFERENT INCUBATION TIMES AND TEMPERATURES FOR USE IN ACQUIRING SATISFACTORY RESULTS FOR THE USER
THE GROWTH CURVE FOR MICROBES The above image that represents the life history of a culture of bacteria needs to be understood and kept in mi... -
SOME COMMENTS TO CONSIDER IN THE TRAINING OF NEW USERS OF ROTH BIOSCIENCE LLC R-CARD MEDIA FOR “WATER WATCHERS”
by Jonathan N. Roth Ph.D. & C.E.O. , Roth Bioscience, LLC There are three main types of procedures that may be used, depending on the propertie... -
Evaluation of Easygel Card (now renamed to R-Card®) for detection of Aerobic Bacteria Counts
Easygel Card (now renamed to R-Card®) vs 3M Petrifilm -
Options For R-CARD® Use
Option #1. R-CARD® (3.5”x 4”) Inoculate with 1 mL of aqueous inoculum - Option #2.R-CARD® (3.5”x 4”) Filter the aqueous inoculum thru a 47mm, 0.45µm Micropore Membrane filter - Option #3.R-CARD® (4” x 4.5”) Inoculate with 3.0 mL of aqueous inoculum -
Stella Bowles: (age 17) river testing for fecal contamination influenced a $15.7 million government project to clean the LaHave River in Nova Scotia
Testimonials on How Easygel Card Technology (now renamed as R-Card®) Made it Possible
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Testing 2mL-100mL Aqueous Samples on R-Card® Using Membrane Filter
Superior Microbiology Technology That Saves The Environment From Mega-Tons Of Petri Dish Waste