2660249 Stablcal Stabilised Formazine Turbidity Standard 100 NTU, 500 mL

Stabilised Formazine Primary Standard Solution is required for simple and reliable turbidimeter calibration. The solution is packaged in 500 mL bottle. Stablcal Stabilised Formazine Turbidity Standard has the concentration of 100 NTU. The solution is intended to be used with TL23, TU52, 2100Q, 2100N, 2100AN series turbidimeter. Ready-to-use Standard Solution is designed only for in-lab and field analysis.

Procedure for infrequently used StablCal Turbidity Standards

This process is applicable to standards used more than a week ago or to recently received standards.

For bulk solution standards: Invert the standard repeatedly for 2-3 minutes before opening the seal on the bottle. Let the standard stabilize for 5 minutes. Invert 2-3 times before adding the standard into the clean sample cell. Rinse the sample cell at least one time with the bulk standard. Eliminate any optical deviations on the sample cell. Fill the sample cell with the standard, close the sample cell and the bulk solution.

For bulk solution and sample cell standards: Invert the sample cell 2-3 times and let the sample settle down for 2-3 minutes. The sample cell is now prepaired for the analysis.

Storage conditions

It is required to store standards at the temperature from 5 to 25 ˚C. It is not recommended to place used standard from the sample cells back into the original container.