Summary
Experiments are described which suggest strongly that the gelling of sodium metasilicate solutions is dependent on foreign trace additives. Gelling can be inhibited by their removal, achieved by a simple process which has been called “gel gettering”.
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References
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Henisch, H.K., Neurgoankar, R.R. On the gelling of sodium metasilicate solutions. Kolloid-Z.u.Z.Polymere 250, 617–619 (1972). https://doi.org/10.1007/BF01501475
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DOI: https://doi.org/10.1007/BF01501475