Is a Microslide still acceptable to use if it has not expired but the agar is dried out?
No, the Microslide is not acceptable to use.
How much bacteria is an acceptable level for cooling water or metalworking fluid?
Although you should determine what is an acceptable level of bacteria for your unique system, a general guide would be less than 105-106 CFU/ml for cooling water and less than 106-107 CFU/ml for metalworking fluid.
Why did the Nutrient-TTC Agar change from yellow to green?
The Nutrient-TTC agar color is normally light yellow when the agar is cast. After testing, during the incubation phase, the agar may change to a light green color. This color change is a result of [...]
What does the print on a Microslide vial mean?
The print on a Microslide vial is as follows: XXX/XXX BBE: YY-MM-DD XXXXXX. Where XXX/XXX is the media on side one /side two of the paddle, BBE is the expiration date, and the last set [...]
What is the shelf-life of Microslides?
The shelf-life of Microslides is 6-9 months if properly stored. Store out of direct sunlight at room temperature (do no refrigerate).
Do I have to have an incubator for Microslides?
No. Microslides can be set out at room temperature, or placed in a warm area such as the top of a refrigerator to "incubate". Growth will still develop if Microslides are not incubated, it will [...]
Can I use pH test strips in non-buffered or low-buffered aqueous solutions?
Currently, our pH test strips are designed for testing buffered solutions, and the calibrations (color charts) are made on buffers against a pH-meter measurement. For non- or low-buffered solutions, these strips are not suitable. For [...]
How should test strips be stored?
Test strips should be stored in closed vials/bags,in a cool, dry place out of direct sunlight. The ideal condition is 25C (77F). A range of 20C (68F) - 30C (86F) is acceptable. Test strips should not [...]
Why isn’t the 145 Chlorine test paper working?
If you believe that the solution you are using contains chlorine and yet after testing it with chlorine test paper, the strip is still white, you may be seeing what is referred to as the [...]
How often should I test my bleach using 145 Chlorine test paper?
Testing should be done at least once daily in smaller restaurants, and more frequently in busy establishments as each time the rinse solution is used, it will get slightly diluted.