Sigma-Aldrich/Streptococcus/Enterococcus PT- Drinking & Surface Water/MIC011-2EA/2EA

Properties:

Description:

General description

This proficiency testing sample is produced in accordance with ISO/IEC 17043:2010. All information regarding the use of this material can be found in the reporting packet supplied for each sample.

Other Notes

Proficiency testing samples are presented as single blind. No values for the samples are released until the testing period concludes. Values of analytes vary lot to lot.

This PT sample is designed for the quantitative analysis of fecal streptococcus. The PT sample is provided in duplicate as a stable dehydrated vitroid^™ requiring hydration. The additional sample is provided for mishaps in the lab. Store the PT sample as directed. The dehydrated vitroid sample is stable for a time exceeding the study schedule.

Proficiency Testing Schedule (2017-2018)

Drinking Water
WS17-1 January 18 - March 3, 2017
WS17-2 March 29 - May 12, 2017
WS17-3 July 12 - August 25, 2017
WS17-4 September 27 - November 10, 2017

WS18-1 January 17 - March 2, 2018
WS18-2 March 28 - May 11, 2018
WS18-3 July 11 - August 24, 2018
WS18-4 September 26 - November 9, 2018

Quick-Turn Study - (non-scheduled proficiency test that is available at any time)

Packaging

Set contains 2 sterile screw cap vials each containing a Vitroid^™ (a small disk containing the possible organisms) and 2 - 99mL bottles of phosphate buffer.

Preparation Note

Sample preparation
Allow the capped sample vial to equilibrate to room temperature.
While the sample is equilibrating to room temperature, warm the hydrating fluid in your incubator to 35-37 °C.
Once the sample is at room temperature and the hydrating fluid is warmed to 35-37 °C (about 30 min), open the sample vial and aseptically transfer the disk to the hydrating fluid.
Shake well and place the sample in your incubator for 30 minutes. The hydration temperature of 35-37 °C is rigorous. Low temperature will not assure complete hydration. Higher temperature will kill the microorganisms.
After 30 minutes, remove the hydrated sample from the incubator and shake well. Inspect to assure dissolution of the disk. Some residue may remain. This will not affect the hydration.
This dilution is your sample for analysis.

Legal Information

Vitroid is a trademark of Sigma-Aldrich Co. LLC

Safety: