R-CARD® Total Count - Pack of 25
R-CARD® Total Count - Pack of 25
R-CARD® Total Count - Pack of 25
R-CARD® Total Count - Pack of 25
R-CARD® Total Count - Pack of 25

R-CARD® Total Count - Pack of 25

Regular price
Sale price
Regular price
Sold out
Unit price

Card Size: 3.5"x 4"     Capacity: 1mL       STORAGE CONDITIONS AND STORAGE LIFE

A revolution in bacteria testing, the R-CARD® test method offers the most convenient, streamlined way to detect not only the presence of microbes, but also the number of colonies.

  • Completely self-contained, requiring almost no additional equipment
  • Extremely accurate and easy to understand results
  • Colonies will show up as pale/dark red dots

How It Works

Unlike most Total Plate Count media on the market, R-CARD® rapid tests require almost no additional equipment and offer an extremely easy user-experience. Simply lift the R-CARD® Total Count clear film and deposit 1 mL of your liquid sample on the card. Then release the clear film so it can fall back on top of the card, covering your sample. Within 1-3 minutes, the liquid sample will solidify between the two layers. This prevents it from dripping or leaking, making R-CARD® rapid tests incredibly easy to transport and use in the field.

To read your results, simply count the number of pale/dark red dots which show the number of colonies (which would be recorded as the number of CFU/mL).

If you’re looking for a testing method that can detect specific bacteria (such as E. coli, Coliform, etc.), please see our full line of R-CARD® rapid test products here.

For more detailed instructions, please check out the PDFs below. Remember, we offer free technical support on any stage of the process and would be happy to instruct and advise you.

Testing 2mL-100mL Aqueous Samples on R-Card® Using Membrane Filter (PDF)
Technical Step-by-Step Instructions: View PDF document
R-CARD General Use Instructions: View PDF document
Additional Helpful and Important Information

Why R-CARD® Rapid Tests Are Better Than Competing Products

R-CARD® rapid tests offer a revolution in convenience without sacrificing accuracy. The cards are completely self-contained and don’t require petri dishes, agar, or other gear that’s fragile and prone to leak. Simply place your sample on the card and wait 1-3 minutes for the liquid sample to solidify between the two layers. This prevents it from dripping or leaking. Cards can easily be stored in a coat or backpack pocket.

It’s also incredibly easy to read R-CARD® results. They not only detect the presence of total microbes, but also the number of colonies. Simply count the number of pale/dark red dots that appear after the appropriate incubation period.

Additional Equipment Needed

While the R-CARD® rapid tests are completely self-contained, you will need a sterile dropper or syringe to dispense your liquid sample onto the card. Once your sample is collected, it’s recommended to use an incubator to rapidly decrease the time it takes to view results (24 to 48 hours with an incubator. The incubation time and temperature depend on the type of microorganism under study.)

Ideal Uses

  • Agriculture
  • Education
  • Cosmetics & Personal Care Manufacturing
  • Food & Beverage
  • Pharmaceuticals
  • Veterinary

Why Choose Roth Biosciences?

Dr. Jonathan Roth is one of the most well-known names in microbiology and bacteria testing. He was the first to develop testing methods to use enzyme substrates for producing different colors to distinguish different types of bacteria. Roth Biosciences continues to offer some of the most revolutionary innovations in the industry.

Customer Reviews

Based on 1 review
Amber Thomason

This is perfect for our homestead, we’re able to test our raw milk using these and our egg incubator. Save money on the lab work! So happy to have found this!