+1 also, I did not use a purity tester, since the huge containers on my save, I only uploaded updates if it filled five with pure crmc. Also, My save has the extra steps to fix impurities, but they were only caused then the pqrt didnt melt fast enough. The second a molten clst and a molten pqrt touch, they both become molten crmc, but i had fixed the pqrt melting slowly. Great save tho