 鲜花( 17)  鸡蛋( 0)
|
公认的硬度划分是:4 `! ?8 }" E F+ V& D
Water containing calcium carbonate at$ a+ X5 j; Q" l! v# F# c% `4 v, R' m
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,$ l( X6 R7 ~% I6 n( w( U+ V; A2 Z
moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard
0 _. f! z/ @) m/ X: W! _1 A爱城的水硬度在150-160之间,属于硬水,但不算很硬。这种硬度的水不需要在水厂进行软化处理,适当硬度的水对健康不但无害,反而有益。以下是加拿大主要城市水硬度指标:
8 Z" l: l2 C! h8 z5 ^+ ]+ fMontreal 116 ppm,Calgary 165 ppm, Regina 496 ppm, Saskatoon 160-180 ppm, Winnipeg 77 ppm,Toronto 121 ppm,Vancouver < 3 ppm, Charlottetown, PEI 140–150 ppm, Waterloo Region 400 ppm, Guelph 460 ppm.. P! h" r! g! ]
在家里根本不需要安装什么软化水装置,而且都要把水烧开的做法也不可取,钙和镁都沉降了下来,其实这两种元素都是身体需要的,直接喝冷水最好,如果肚子能适应的话。) v* l* s) ?7 w$ G
/ ^. X9 d6 [. J9 k |
|