Water Micro

Dear Stanley: What is Mean Assay Value?

Dear Stanley, I use EZ-Accu Shot™ for growth promotion testing (GPT), and sometimes I don’t get counts within 50-200% of the count printed on the label. Is there something wrong with my media or the control?  Sincerely, Beverly Fresno, CA…
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How to Maintain Monthly Working Stock Cultures with Microbiologics QC Strains

Proper maintenance of quality control strains is essential for ensuring acceptable performance.  Most strains produced by Microbiologics can be used for up to a month after reconstitution when correctly maintained. Follow these best practices and our maintenance plan below to…
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Dear Stanley: Differences Between Atmospheres for Microorganism Growth

Dear Stanley, I want to make sure I’m using the right atmosphere to get good growth of my microorganisms. Can you explain the differences between aerobic, anaerobic, microaerophilic, and capnophilic atmospheres for microorganism growth? Beth from Salt Lake City, UT Dear…
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The Basics of Water Testing Quality Control

The water testing laboratory is the last line of defense against water-borne infections. Accurate results are critical to consumer safety. A robust Quality Assurance/Quality Control program will give the laboratory confidence in its results. Laboratories need reliable positive and negative…
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Relax During #LabWeek with These 9 Stress Relievers

You love being a microbiologist. Your passion for understanding microorganisms and the impact they have on every aspect of life fuels your long days in the lab. We know all too well that a busy lab and finicky microorganisms can…
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11 Pour Plate Method Best Practices

The pour plate method is an economical way for pharmaceutical, contract and even food laboratories to perform tests focused on a specific number of bacteria. The process may seem simple (melt, pipette, pour, swirl, incubate), but errors have been known…
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7 Rules to Follow When Writing about Microorganisms

Recalling and pronouncing peculiar microorganism names is a skill every microbiologist has mastered. However, the intricate rules for writing about microorganisms may leave even experienced microbiologists second-guessing how to annotate or spell a strain name. Our quiz below will challenge…
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5 Reasons to Avoid Maintaining Stock Cultures in Your Lab

Are you certain the reference stock cultures you use for quality control are identical to the reference cultures you originally purchased? A study performed by Cross, Russel and Desai examined working cultures from eight accredited microbial testing laboratories. Using fluorescent…
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8 Microorganisms that Changed the World

Microorganisms triggered many events that drastically altered human history. The most notorious microbes caused mass death and destruction, but they also inspired modern medical advances often taken for granted. The significant impact these tiny, invisible-to-the-naked-eye creatures can have on our…
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#CreepyCultures is Back!

It’s that time of year again! The time when we ask you, our fellow microbiologists, to send us your creepiest, crawliest Halloween-themed agar art. The time when you get to put those supreme streaking skills and that artistic flair to work for a…
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