2660649 Stablcal Stabilised Formazine Turbidity Standard 1000 NTU, 500 mL

Stablcal Stabilised Formazine Turbidity Standard is required to conduct calibration of the turbidimeter. Each bottle contains 500 mL with the concentration of 1000 NTU. The standard is compatible with TL23, TU52, 2100Q, 2100N, 2100AN.

Procedure for infrequently used StablCal Turbidity Standards

This process applies to standards that have been in use for more than a week or to recently received standards.

For bulk solution standards: Invert the standard for several minutes before removing the seal on the bottle. Then let the standard to stand still for 5 minutes. Invert a few times before adding the standard in the sample cell. Rinse the sample cell at least once with the bulk standard. After that eliminate any optical variations on the sample cell by using traditional preparation techniques. Add the standard into the sample cell, close the sample cell and the bulk solution.

For bulk solution and sample cell standards: Invert the sample cell several times. Let the sample settle down for 2-3 minutes before measurement.

Storage conditions

Store the solution between 5 and 25 ˚C. Let the standard to adjust to ambient instrument temperature before usage.