Using Stablcal Stabilized Standards; Instructions For Preparing Stablcal Stabilized Formazin Standards - Hach POCKET TURBIDIMETER User Manual

Using StablCal ® Stabilized Standards
Most consistent results will be achieved with the use of StablCal
Stabilized Formazin Standards. The Instructions for Preparing StablCal
Stabilized Formazin Standards below, provide information on how to
accurately prepare StablCal Standards for use.

Instructions for Preparing StablCal Stabilized Formazin Standards

When using bulk standards that have been sitting undisturbed for longer
than a month, start at Step 1. If the standards are used on at least a weekly
interval, start at Step 3.
1. Shake the standard vigorously for 2-3 minutes to resuspend
any particles.
2. Allow the standard to stand undisturbed for 5 minutes.
3. Gently invert the bottle of StablCal 5 to 7 times.
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