Pro Check Solid Validation Turbidity Standard
DISCONTINUED in 2017
These items are no longer available from the manufacturer.
How do they work?
Cat. No. Description
28335 ProCheck Low NTU Value (typically less that 1 NTU) – for MicroTOL, Micro 100/1000
28336 ProCheck Mid NTU Value (typically around 7 NTU) – for MicroTOL, Micro 100/1000
The ProCheck Solid Validation Standards are used as a quick and convenient “check” to determine if a Primary Calibration is needed prior to the next regularly scheduled primary calibration. Designed for use with HF scientific turbidimeters, they can be used as often as needed and will last for many years. Although actual values will be determined with testing, the typical value for the low range ProCheck-S will be less than 1 NTU for drinking water and other applications requiring a very low NTU range and the mid range ProCheck-S will typically be around 7 NTU for higher range applications. Perform a full primary instrument turbidity calibration using the normal procedures for your instrument. Insert the ProCheck-S standard into the instrument with the red index mark facing forward. Take a reading, record the obtained value and log the result. Calculate the +/- 10% Min/Max Pass Range and log the results. Min value is the obtained value minus 10%, the Max value is the obtained value plus 10%
All units consist of one ProCheck-S standard, log sheet, microfiber cloth, instruction sheet all housed in a hard, protective case.