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USP <644> Conductivity Proficiency Test


Proficiency Test for laboratories performing USP 644 Conductivity testing on pharmaceutical materials by measuring voltage in milli siemens. read more



Catalog Number:
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PH-0921, PH-0122, PH-0422

Product Details

Product Details

Quantitative Proficiency Test (PT) for laboratories performing Conductivity by USP <644> or equivalent. Participants report quantitative results for conductivity, testing for material’s conductivity in micro siemens per centimeter (uS/cm), for their sample(s). Samples provided two vials containing 10g of material.  Participants are asked to determine the conductivity of target analyte in the sample per the USP monograph or equivalent.

Target Analyte: Erythriol, powdered or granulated solid

USP PT Schedule

USP PT Schedule

Study Number Study Open Date Study Close Date
PH-0422 4/18/2022


Extended from 6/9/22

PH-0922 9/19/2022 11/18/2022
PH-0123 1/16/2023 3/17/2023
PH-0523 5/15/2023 6/14/2023