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sample-335 20150703
MAshi no susume

 

 
ichibei boil baul become white
人間国宝岩野市兵衛が使っている釜の周りには白いカルシウムが
長年の使用のなかでこびりついている…なぜか?

 

 

 
ソーダ灰で煮た繊維は酸性の明礬を中和して中性に戻す
力がある、苛性ソーダで煮ると、戻す力が弱い。

 

 

MA紙と、酸性紙と、コピー用紙
炭酸カルシウム添加のススメ

 

MAshi / MA紙
MAshi / MA紙

h


 


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