ISS potty breaks, crew dons masks, goggles to repair

ISS potty breaks, crew dons masks, goggles to repair

from spaceref.com, Saturday's on-orbit status report:

In the SM, the FE completed the weekly SOZh/ECLSS servicing tasks, which
today were extended for some non-routine IFM (inflight maintenance)
activities. [For some time overnight and today, ground specialists at
TsUP/Moscow and station crew (wearing face masks, goggles and gloves)
performed troubleshooting on the ASU toilet facilities, which had a backflow
and contamination problem with the preservative/pre-treat solution in the
hoses up to the waste separator and fan. For the duration of the
troubleshooting, the crew was cleared to use the Soyuz TMA-5 waste
collection system (which has a one-day reserve capability). The E-K
preservative container normally holds five liters of Tox Level 2 pre-treat
solution, i.e., a mix of H2SO4 (sulfuric acid), CrO3 (chromium oxide, for
oxidation and purple color), and H2O (water). The pre-treat liquid is mixed
with water in a dispenser (DKiV) and used for toilet flushing.]



any further details? did the repair work?