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
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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
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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)
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(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
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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”
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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
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Easygel Card (now renamed to R-Card®) vs 3M Petrifilm -
Options For R-CARD® Use
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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
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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
